How Is the Central Portion of a T Cell Receptor

Multiple Choice

How is the central portion of a T cell receptor complex functionally analogous to the center of the B cell receptor complex?

A) It has two protein chains, just like a B-cell receptor.
B) Both receptors bind epitopes (small amino acid sections of antigen molecules) .
C) Both bind structures directly on the surface of microbes.
D) Both can be secreted from lymphocytes to bind to pathogens under certain situations.
E) Both have two heavy chains and two light chains.