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
Alopecia areata is treated by- 
Select and explain. 
A. Minoxidil, B. Tranquilizers, C. Whitfields oinment, D. Parenternal penicillin
A: Minoxidil
Answer: A: Minoxidil 
Explanation: A. i.e. Minoxidil