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: Social & Preventive Medicine
[{'content': 'The distinct golden colour in transgenic Golden rice is due to the presence of- \nSelect and explain. \nA. Riboflavin, B. b-carotene, C. Vitamin B12, D. Xanthophyll', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., b-carotene", 'role': 'assistant'}]