Which of the Following Describes Nucleophilic Acyl Substitution

Multiple Choice

Which of the following describes nucleophilic acyl substitution?

A) Nucleophile adds to the electrophilic carbon of the carbonyl bond.
B) Electrophile replaces a group on the carbon alpha to the carbonyl.
C) Nucleophile replaces a group adjacent to the carbon of carbonyl.
D) Two carbonyl groups react with each other.