Which of the following is the least abundant aldol adduct formed from an equimolar mixture of ethanal and propanone in aqueous NaOH solution?

• A. <a href="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-enolates-q2a.png"><img alt="Least abundant aldol adduct formed from equimolar mixture in NaOH solution - option a" class="alignnone size-full wp-image-224646" height="64" src="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-enolates-q2a.png" width="133"/></a>
• B. <a href="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-enolates-q2b.png"><img alt="Least abundant aldol adduct formed from equimolar mixture in NaOH solution - option b" class="alignnone size-full wp-image-224647" height="68" sizes="(max-width: 151px) 100vw, 151px" src="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-enolates-q2b.png" srcset="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-enolates-q2b.png 151w, https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-enolates-q2b-150x68.png 150w" width="151"/></a>
• C. <a href="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-enolates-q2c.png"><img alt="Least abundant aldol adduct formed from equimolar mixture in NaOH solution - option c" class="alignnone size-full wp-image-224648" height="82" src="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-enolates-q2c.png" width="120"/></a>
• D. <a href="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-enolates-q2d.png"><img alt="Least abundant aldol adduct formed from equimolar mixture in NaOH solution - option d" class="alignnone size-full wp-image-224649" height="84" src="https://www.sanfoundry.com/wp-content/uploads/2018/08/organic-chemistry-questions-answers-enolates-q2d.png" width="148"/></a>