B Cells Are Activated by ________ and T Cells Are

Multiple Choice

B cells are activated by ________ and T cells are activated by ______.

A) soluble, intact antigens; antigen fragments displayed on the surfaces of other cells
B) soluble, intact antigens; soluble, intact antigens
C) antigen fragments displayed on the surfaces of other cells; soluble, intact antigens
D) antigen fragments displayed on the surfaces of other cells; antigen fragments displayed on the surfaces of other cells
E) insoluble, intact antigens; antigen fragments displayed on the surfaces of other cells