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': 'All of the following are true about Metoclopramide except \nSelect and explain. \nA. It is an antiemetic which blocks 5HT3 receptors, B. It has prokinetic action by 5HT4 agonism, C. It has D2 blocking action resulting in extrapyramidal side effects, D. It can be used for L - Dopa induced vomiting', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Metoclopramide crosses blood brain barrier & because of D2 blocking action can reduce the efficacy of L-Dopa. Therefore can not be used in L-Dopa induced vomiting.', 'role': 'assistant'}]