In Mammals, T-Cell Development Occurs in the _____, Whereas B-Cell

Multiple Choice

In mammals, T-cell development occurs in the _____, whereas B-cell development occurs predominantly in the _____.

A) thymus; bursa of Fabricius
B) bone marrow; mesenteric lymph nodes
C) bone marrow; thymus
D) thymus; bone marrow
E) None of the answers are correct.