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
Gingival hyperplasia is caused by all except 
Select and explain. 
A. Sodium valproate, B. Carbamazepine, C. Verapamil, D. Bleomycin
B: Carbamazepine
Answer: B: Carbamazepine 
Explanation: None