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: Pharmacology
Hirsutism is caused by which drug : 
Select and explain. 
A. Minoxidil, B. Dactinomycin, C. Cycloserine, D. Valsartan
A: Minoxidil
Answer: A: Minoxidil 
Explanation: Minoxidil is a potassium channel opener, useful as an antihypertensive drug. It can cause hirsutism in females and is used for the treatment of alopecia in males.