This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Special Senses, Subject name: Physiology
[{'content': 'Which molecules combine to form rhodopsin? \nSelect and explain. \nA. Bathorhodopsin and 11-cis-retinal, B. Bathorhodopsin and all-trans-retinal, C. Bathorhodopsin and scotopsin, D. Scotopsin and 11-cis-retinal', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Rhodopsin is the light-sensitive chemical in rods. Scotopsin and all-trans retinal are the breakdown products of rhodopsin, which has absorbed light energy. The all-trans retinal is conveed into 11-cis retinal, which can recombine with scotopsin to form rhodopsin', 'role': 'assistant'}]