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': 'Most common side effect of 5-Fluorouracil is- \nSelect and explain. \nA. GI. toxicity, B. Bone marrow depression, C. Cardiotoxicity, D. Neurotoxicity', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., GI toxicity o The earliest untoward symptoms during a course of 5-FU are anorexia and nausea; these are followed by stomatitis and diarrhea.", 'role': 'assistant'}]