tRNA molecule consists of four major and one minor arm:
A) Acceptor arm: consists of a base-paired stem that ends in an unpaired sequence whose free 2' or 3'-OH can be linked to an amino acid.
B) T C arm: named so due to the presence of a triplet sequence containing pseudouridine, a modified base.
C) Anticodon arm: always contain anticodon triplet in the center of the loop.
D) D arm: named for its content of base dihydrouridine.
E) Extra arm: a minor arm that lies between T C arm and anticodon arm, varies from 3-21 bases.
So, the correct option is 'tRNA'.