Follicular Helper T Cells Are a Recent Discovery in the Helper

Follicular helper T cells are a recent discovery in the helper T-cell lineage.What is the primary role of T_FH cells?

A) To help B-cell development in germinal centers
B) To regulate T_REG cell activity
C) To stimulate dendritic cell production
D) To suppress B-cell activation after pathogen has been cleared
E) To suppress T_C cells after an infection has been cleared