Which one of the following is correct representation of Zenz diagram?

• A. <a href="https://www.sanfoundry.com/wp-content/uploads/2019/10/heat-transfer-operations-questions-answers-online-quiz-q2a.png"><img alt="The following is correct representation of Zenz diagram - option a" class="alignnone size-full wp-image-249822" height="268" sizes="(max-width: 316px) 100vw, 316px" src="https://www.sanfoundry.com/wp-content/uploads/2019/10/heat-transfer-operations-questions-answers-online-quiz-q2a.png" srcset="https://www.sanfoundry.com/wp-content/uploads/2019/10/heat-transfer-operations-questions-answers-online-quiz-q2a.png 316w, https://www.sanfoundry.com/wp-content/uploads/2019/10/heat-transfer-operations-questions-answers-online-quiz-q2a-300x254.png 300w" width="316"/></a>
• B. <a href="https://www.sanfoundry.com/wp-content/uploads/2019/10/heat-transfer-operations-questions-answers-bed-temperature-profiles-q2b.png"><img alt="The following is correct representation of Zenz diagram - option b" class="alignnone size-full wp-image-247432" height="270" sizes="(max-width: 318px) 100vw, 318px" src="https://www.sanfoundry.com/wp-content/uploads/2019/10/heat-transfer-operations-questions-answers-bed-temperature-profiles-q2b.png" srcset="https://www.sanfoundry.com/wp-content/uploads/2019/10/heat-transfer-operations-questions-answers-bed-temperature-profiles-q2b.png 318w, https://www.sanfoundry.com/wp-content/uploads/2019/10/heat-transfer-operations-questions-answers-bed-temperature-profiles-q2b-300x255.png 300w" width="318"/></a>
• C. <a href="https://www.sanfoundry.com/wp-content/uploads/2019/10/heat-transfer-operations-questions-answers-bed-temperature-profiles-q2c.png"><img alt="The following is correct representation of Zenz diagram - option c" class="alignnone size-full wp-image-247433" height="275" src="https://www.sanfoundry.com/wp-content/uploads/2019/10/heat-transfer-operations-questions-answers-bed-temperature-profiles-q2c.png" width="297"/></a>
• D. <a href="https://www.sanfoundry.com/wp-content/uploads/2019/10/heat-transfer-operations-questions-answers-bed-temperature-profiles-q2d.png"><img alt="The following is correct representation of Zenz diagram - option d" class="alignnone size-full wp-image-247434" height="253" sizes="(max-width: 308px) 100vw, 308px" src="https://www.sanfoundry.com/wp-content/uploads/2019/10/heat-transfer-operations-questions-answers-bed-temperature-profiles-q2d.png" srcset="https://www.sanfoundry.com/wp-content/uploads/2019/10/heat-transfer-operations-questions-answers-bed-temperature-profiles-q2d.png 308w, https://www.sanfoundry.com/wp-content/uploads/2019/10/heat-transfer-operations-questions-answers-bed-temperature-profiles-q2d-300x246.png 300w" width="308"/></a>