This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Central Nervous system, Subject name: Pharmacology
The following ADR is seen with 
Select and explain. 
A. Phenytoin, B. Valproate, C. Barbiturate, D. Carbamazepine
A: Phenytoin
Answer: A: Phenytoin 
Explanation: The picture shows gingival hyperplasia caused by phenytoin Ref: KDT 7th ed Pg: 417-422