Which is the proper BiCMOS inverter circuit?

• A. <a href="https://www.sanfoundry.com/wp-content/uploads/2017/05/vlsi-questions-answers-bicmos-logic-gates-q10a.png"><img alt="The proper BiCMOS inverter circuit - option a" class="alignnone size-full wp-image-161875" height="350" src="https://www.sanfoundry.com/wp-content/uploads/2017/05/vlsi-questions-answers-bicmos-logic-gates-q10a.png" width="400"/></a>
• B. <a href="https://www.sanfoundry.com/wp-content/uploads/2017/05/vlsi-questions-answers-bicmos-logic-gates-q10b.png"><img alt="The proper BiCMOS inverter circuit - option b" class="alignnone size-full wp-image-161876" height="350" src="https://www.sanfoundry.com/wp-content/uploads/2017/05/vlsi-questions-answers-bicmos-logic-gates-q10b.png" width="400"/></a>
• C. <a href="https://www.sanfoundry.com/wp-content/uploads/2017/05/vlsi-questions-answers-bicmos-logic-gates-q10c.png"><img alt="The proper BiCMOS inverter circuit - option c" class="alignnone size-full wp-image-161877" height="350" src="https://www.sanfoundry.com/wp-content/uploads/2017/05/vlsi-questions-answers-bicmos-logic-gates-q10c.png" width="400"/></a>
• D. <a href="https://www.sanfoundry.com/wp-content/uploads/2017/05/vlsi-questions-answers-bicmos-logic-gates-q10d.png"><img alt="The proper BiCMOS inverter circuit - option d" class="alignnone size-full wp-image-161878" height="350" src="https://www.sanfoundry.com/wp-content/uploads/2017/05/vlsi-questions-answers-bicmos-logic-gates-q10d.png" width="400"/></a>