What is the role of T-cells in the humoral immune response?

A) Helper T-cells are converted to B-cells following clonal selection.

B) The B-cells are activated to produce antibodies following antigen recognition.

C) Effector B-cells undergo clonal expansion after receiving a signal from memory T-cells.

D) The B-cells are activated after receiving an interleukin signal from an effector T-cell.