Collagen Is a Structural Protein That Is Necessary for the Integrity

Collagen is a structural protein that is necessary for the integrity of many of your tissues and organs.When a Treg is activated by binding to an antigen-MHC complex presenting a portion of a collagen molecule, the activated Treg will

A) activate B lymphocytes to divide and secrete antibodies against collagen.
B) activate T-helper cells that recognize the same antigen-MHC complex.
C) deactivate the antigen-presenting cell by phagocytosis.
D) block the activation of T-helper and cytotoxic T cells that bind the same antigen-MHC complex.
E) secrete cytokines that kill B lymphocytes secreting antibodies specific for collagen.