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 statement is false regarding mebendazole? \nSelect and explain. \nA. Safe in pregnancy, B. Broad spectrum antihelmenthic, C. It is effective against egg and adults, D. It act on cytoplasmic microtubules', 'role': 'user'}, {'content': "Answer: A \nExplanation: Mebendazole is a benzimidazole derivative with antihelmintic effect. It causes degeneration of parasite's cytoplasmic microtubules and thereby selectively and irreversibly blocks glucose uptake in susceptible adult intestine-dwelling helminths and their tissue-dwelling larvae. Mebendazole has shown embryotoxic and teratogenic activity. It's contraindicated in pregnancy as with the case albendazole.", 'role': 'assistant'}]