What is the major organic product obtained from the following sequence of reactions?

Question

Quizplus · Accepted Answer

The starting material is a ketone, which undergoes a nucleophilic addition reaction with NaBH4 to form the corresponding alcohol (1). This alcohol is then oxidized using PCC to form the corresponding aldehyde (2). The aldehyde then undergoes a Grignard reaction with CH3MgBr to form a secondary alcohol (3). Finally, this secondary alcohol is dehydrated using TsOH and heat to form an alkene (4). Therefore, the major organic product obtained from this sequence of reactions is choice C.

What Is the Major Organic Product Obtained from the Following