Choose the correct representation, which depict a non-zero torque in the armature?

• A. <a href="https://www.sanfoundry.com/wp-content/uploads/2017/05/electrical-machines-questions-answers-dc-machine-torque-q1a.png"><img alt="The non-zero torque in the armature - option a" class="alignnone size-full wp-image-160792" height="91" src="https://www.sanfoundry.com/wp-content/uploads/2017/05/electrical-machines-questions-answers-dc-machine-torque-q1a.png" width="300"/></a>
• B. <a href="https://www.sanfoundry.com/wp-content/uploads/2017/05/electrical-machines-questions-answers-dc-machine-torque-q1b.png"><img alt="The non-zero torque in the armature - option b" class="alignnone size-full wp-image-160793" height="99" src="https://www.sanfoundry.com/wp-content/uploads/2017/05/electrical-machines-questions-answers-dc-machine-torque-q1b.png" width="300"/></a>
• C. <a href="https://www.sanfoundry.com/wp-content/uploads/2017/05/electrical-machines-questions-answers-dc-machine-torque-q1c.png"><img alt="The non-zero torque in the armature - option c" class="alignnone size-full wp-image-160794" height="114" src="https://www.sanfoundry.com/wp-content/uploads/2017/05/electrical-machines-questions-answers-dc-machine-torque-q1c.png" width="300"/></a>
• D. any of the mentioned