What Is a Distinguishing Characteristic Between Class I and Class

What is a distinguishing characteristic between Class I and Class II aminoacyl-tRNA synthetases?

A) Class I enzymes are ligases, while Class II enzymes are lyases.
B) Class I enzymes have proofreading, while Class II enzymes do not.
C) Class I enzymes bind to specific nucleotides in tRNA substrates, while Class II enzymes do not.
D) Class I enzymes transfer amino acids to the 2´ OH, while Class II enzymes transfer amino acids to the 3´ OH.
E) None of the answers is correct.