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Question 2 Examine the reaction scheme below, and answer the questions that follow. icoa Step 1 Lcozet excess MeMgBr Product C CO Et A B (a) Provide the reagent(s) necessary for Step 1. (1) (b) Show a detailed mechanism for Step 1. (3) (c) The reaction converting A to B is selective. What type of selectivity is displayed in this reaction? (1) (d) Identify product C and provide a mechanism for conversion of B to C. (3) If one equivalent of MeMgBr was used instead of an excess, would a different product to C be formed? Explain your answer. (2)