Raynaud Phenomenon Is Classified as a Type III Hypersensitivity Reaction

Multiple Choice

Raynaud phenomenon is classified as a type III hypersensitivity reaction and is due to:

A) Immune complexes that are deposited in capillary beds, blocking circulation
B) Mast cells that are bound to specific endothelial receptors, causing them to degranulate and creating a localized inflammatory reaction that occludes capillary circulation
C) Cytotoxic T cells that attack and destroy the capillaries so that they are unable to perfuse local tissues
D) Antibodies that detect the capillaries as foreign protein and destroy them using lysosomal enzymes and toxic oxygen species