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 characteristics of - 
Select and explain. 
A. Acne vulgaris, B. Acne rosasea, C. SLE, D. Adenoma sebaeceum
A: Acne vulgaris
Answer: A: Acne vulgaris 
Explanation: A. i.e. Acne Vulgaris