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
Drug of choice for Trigeminal neuralgia is : 
Select and explain. 
A. Carbamazepine, B. Phenobarbitone, C. Phenytoin, D. Valproic acid
A: Carbamazepine
Answer: A: Carbamazepine 
Explanation: None