Acetyl Chloride Undergoes Nucleophilic Substitution at a Faster Rate Than

Acetyl chloride undergoes nucleophilic substitution at a faster rate than methyl acetate because

A) the ester is more sterically hindered than the acid chloride.
B) the acid chloride is more sterically hindered than the ester.
C) the methoxide is a better leaving group than chloride.
D) esters hydrolyze faster than acid chlorides.
E) chloride is a better leaving group than methoxide.