This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Pharmacology
[{'content': 'ADR of acarbose \nSelect and explain. \nA. Flatulence, B. Hypoglycemia, C. Periodic Hyperglycemia, D. Weight gain', 'role': 'user'}, {'content': 'Answer: A \nExplanation: The most common ADR of alpha glucosidase inhibitors are flatulence due to indigestion of polysaccharides Ref: Katzung 12th ed, diabetis Mellitus..', 'role': 'assistant'}]