This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Skin
Comedones are characteristic of: September 2004 
Select and explain. 
A. Psoriasis, B. Acne vulgaris, C. Lichen planus, D. Pemphigus
B: Acne vulgaris
Answer: B: Acne vulgaris 
Explanation: Ans. B i.e. Acne vulgaris