Which of the Following Explains How an Aminoacyl-TRNA Synthetase (AARS)recognizes $\Psi$

Multiple Choice

Which of the following explains how an aminoacyl-tRNA synthetase (AARS) recognizes the correct tRNA?

A) the AARS always recognizes the anticodon
B) the AARS always recognizes elements of the acceptor stem
C) the AARS always recognizes the size and sequence in the variable loop
D) the AARS always recognizes elements in the D loop and T _$\Psi$ C loop
E) the mechanism of AARS recognition varies from one enzyme to another