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: Biochemistry
[{'content': 'All the following are rich in carotene, except? \nSelect and explain. \nA. Tomato, B. Carrot, C. Spinach, D. Maize', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Green and yellow vegetables usually contain Vit A.', 'role': 'assistant'}]