What do B cells make when they recognize antigens?
O A. Antibodies
O B. Pus
O C. T cells
O
D. Pathogens

B cells start to proliferate in response to an invasion by antigens. They produce a generation of plasma cells which actively secrete antibodies in body fluid.
Explanation:
Antibodies are globulin type proteins. Each B cell can generate only a single type of antibody against a particular foreign antigen, to which it was first exposed.

It would be the second choice the phenotype