T is to ________ as B is to ________

Question

T is to ________ as B is to ________.
A) top-located; bottom-located
B) thymus-dependent; bone marrow-derived
C) thyroid-drawn; bowel-developed
D) non-thymus-dependent; bottom-located
E) trabeculae-descended; bursa-origin

Accepted Answer

T cells are referred to as thymus-dependent because they mature in the thymus, while B cells are bone marrow-derived, as they mature in the bone marrow.