Definition: In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.
Input: Question: The T lymphocyte receptor (TCR): 
 Options:  <1> Experience change of class. <2> Does not experience affinity maturation. <3> It transmits signals to the T lymphocyte on its own. <4> It has two sites of antigen recognition such as antibodies. <5> Performs effector functions mediated by its constant regions.
