When attempting to solve the following "predict-the-product" problem, a student wrote the response shown below, a common error. Justify why this reaction would not work.

• A. The Grignard reagent would react with its internal carbonyl group first.
• B. The Grignard reagent needs to be in a basic medium.
• C. The Grignard reagent would not react with the carbonyl because of the phenyl ring.
• D. The Grignard reagent can only react with carbonyl if there is a lithium cation present.

Answer: (A)