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
Exanthema is caused by which drug ? 
Select and explain. 
A. Phenytoin, B. Valproate, C. Digoxin, D. NTG
A: Phenytoin
Answer: A: Phenytoin 
Explanation: Ans. is 'a' i.e., Phenytoin