Which of the following graph represent a zener diode which is voltage rated as VZ ?

• A. <a href="https://www.sanfoundry.com/wp-content/uploads/2017/07/analog-circuits-interview-questions-answers-q4a.png"><img alt="Graph representing zener diode with voltage rated as VZ - option a" class="alignnone size-full wp-image-236292" height="202" src="https://www.sanfoundry.com/wp-content/uploads/2017/07/analog-circuits-interview-questions-answers-q4a.png" width="198"/></a>
• B. <a href="https://www.sanfoundry.com/wp-content/uploads/2017/07/analog-circuits-interview-questions-answers-q4b.png"><img alt="Graph representing zener diode with voltage rated as VZ - option b" class="alignnone size-full wp-image-236293" height="202" src="https://www.sanfoundry.com/wp-content/uploads/2017/07/analog-circuits-interview-questions-answers-q4b.png" width="189"/></a>
• C. <a href="https://www.sanfoundry.com/wp-content/uploads/2017/07/analog-circuits-interview-questions-answers-q4c.png"><img alt="Graph representing zener diode with voltage rated as VZ - option c" class="alignnone size-full wp-image-236294" height="197" src="https://www.sanfoundry.com/wp-content/uploads/2017/07/analog-circuits-interview-questions-answers-q4c.png" width="195"/></a>
• D. <a href="https://www.sanfoundry.com/wp-content/uploads/2017/07/analog-circuits-interview-questions-answers-q4d.png"><img alt="Graph representing zener diode with voltage rated as VZ - option d" class="alignnone size-full wp-image-236295" height="194" src="https://www.sanfoundry.com/wp-content/uploads/2017/07/analog-circuits-interview-questions-answers-q4d.png" width="203"/></a>