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': 'Mr. James has just been diagnosed with myasthenia gravis. You are his physician and are considering different therapies for his disease. Neostigmine and pyridostigmine may cause which one of the following ? \nSelect and explain. \nA. Bronchodilation, B. Diarrhea, C. Cycloplegia, D. Irreversible inhibition of acetylcholinesterase', 'role': 'user'}, {'content': 'Answer: B \nExplanation: They cause cholinergic adverse effects - Diarrhoea, increase secretions.', 'role': 'assistant'}]