Fordyce's spot involves –: (A) Sebaceous glands, (B) Pilosebaceous glands, (C) Hair, (D) Nails
Answer is A. Diseases of sebaceous glands

Pilosebaceous glands          →       Acne vulgaris, Epidermoid (sebaceous) cyst.
Ectopic sebaceous glands    →   Fordyce's spot, Montgomery's tubercle