A Type IV Hypersensitivity Reaction Causes Which Result

A type IV hypersensitivity reaction causes which result?

A) Antibodies coating mast cells by binding to receptors that signal its degranulation, followed by the discharge of preformed mediators
B) Antibodies binding to soluble antigens that were released into body fluids and the immune complexes being deposited in the tissues
C) Lymphokine-producing Th1 cells directly attacking and destroying cellular targets
D) Antibodies binding to the antigen on the cell surface