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
[{'content': 'Which of the following statements about anti-epileptics is false \nSelect and explain. \nA. Phenytoin and carbamazepine act by prolonging Na* channel activation, B. Carbamazepine is also used in trigeminal neuralgias, C. Diazepam is an anti-epileptic, D. Lamotrigine acts by GABA mediated Cl- channel opening', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans. a. Phenytoin and carbamazepine act by prolonging Na+ channel activation Phenytoin and carbamazepine act by prolonging Na+ channel activation, it is a false statement. Phenytoin and carbamazepine limit the repetitive firing of action potentials evoked by sustained depolarization. This effect is mediated by slowing of the rate of recovery of voltage-activated Na+ channels from inactivation, an action that is both voltage-and use-dependent (greater effects if membrane is depolarized.)"-', 'role': 'assistant'}]