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
[{'content': 'Which hormone is responsible for acne ? \nSelect and explain. \nA. Estrogen, B. Thyroid, C. Testosterone, D. Gonadotropins', 'role': 'user'}, {'content': "Answer: C \nExplanation: Ans. is 'c' i.e., Testosterone Predisposing factors for Acne vulgaris Genetic factors Hormones -4 Androgens, glucocoicoids. Psychological stress and depression. Environmental factors High temperature & humidity. Cosmetics -3 Containing lenolin, petroleum, vegetable oils. Infection --> Propionibacterium, Pityrosporum, Staph. epidermidis. Menstural cycle -4 Premenstural aggravation. Hyperkeratosis of pilosebaceous ostia. Drugs Antepileptics (Carbamazepine, phenytoin, phenobarbitone), antitubercular (INH, rifampin, ethionamide), antidepressants, cyclosporine, Vitamin B12.Cough syrups containing halogens (Iodides, bromides).", 'role': 'assistant'}]