Exhibit 21-3 Consider the Reaction Below to Answer the Following Question(s)

Exhibit 21-3
Consider the reaction below to answer the following question(s) :
-Refer to Exhibit 21-3.The purpose of the base catalyst in this reaction is:

A) to polarize the carbonyl group to make it more electrophilic
B) to convert the ester to an intermediate carboxylic acid
C) to convert the alcohol group to an alkoxide anion,which is a better nucleophile
D) all of the above