Which of the following is the conventional representation of internal screw threads?

• A. <img alt="The following is the conventional representation of External screw threads - option a" class="alignnone size-full wp-image-300675" height="118" sizes="(max-width: 344px) 100vw, 344px" src="https://www.sanfoundry.com/wp-content/uploads/2020/12/engineering-drawing-questions-answers-definition-forms-screw-threads-q7c.png" srcset="https://www.sanfoundry.com/wp-content/uploads/2020/12/engineering-drawing-questions-answers-definition-forms-screw-threads-q7c.png 344w, https://www.sanfoundry.com/wp-content/uploads/2020/12/engineering-drawing-questions-answers-definition-forms-screw-threads-q7c-300x103.png 300w" width="344"/>
• B. <img alt="The following is the conventional representation of External screw threads - option b" class="alignnone size-full wp-image-300673" height="122" sizes="(max-width: 341px) 100vw, 341px" src="https://www.sanfoundry.com/wp-content/uploads/2020/12/engineering-drawing-questions-answers-definition-forms-screw-threads-q7a.png" srcset="https://www.sanfoundry.com/wp-content/uploads/2020/12/engineering-drawing-questions-answers-definition-forms-screw-threads-q7a.png 341w, https://www.sanfoundry.com/wp-content/uploads/2020/12/engineering-drawing-questions-answers-definition-forms-screw-threads-q7a-300x107.png 300w" width="341"/>
• C. <img alt="The following is the conventional representation of External screw threads - option c" class="alignnone size-full wp-image-300674" height="117" sizes="(max-width: 344px) 100vw, 344px" src="https://www.sanfoundry.com/wp-content/uploads/2020/12/engineering-drawing-questions-answers-definition-forms-screw-threads-7b.png" srcset="https://www.sanfoundry.com/wp-content/uploads/2020/12/engineering-drawing-questions-answers-definition-forms-screw-threads-7b.png 344w, https://www.sanfoundry.com/wp-content/uploads/2020/12/engineering-drawing-questions-answers-definition-forms-screw-threads-7b-300x102.png 300w" width="344"/>
• D. <img alt="The following is the conventional representation of External screw threads - option d" class="alignnone size-full wp-image-300676" height="112" sizes="(max-width: 340px) 100vw, 340px" src="https://www.sanfoundry.com/wp-content/uploads/2020/12/engineering-drawing-questions-answers-definition-forms-screw-threads-q7d.png" srcset="https://www.sanfoundry.com/wp-content/uploads/2020/12/engineering-drawing-questions-answers-definition-forms-screw-threads-q7d.png 340w, https://www.sanfoundry.com/wp-content/uploads/2020/12/engineering-drawing-questions-answers-definition-forms-screw-threads-q7d-300x99.png 300w" width="340"/>