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: Dental
[{'content': 'According to Bezold brucke effect: \nSelect and explain. \nA. Change in colour occurs due to change in brightness, B. Change in colour occurs due to change in wavelength, C. Both, D. None', 'role': 'user'}, {'content': "Answer: A \nExplanation: According to Bezold- brucke effect, change in colour is due to change in brightness.\xa0At low light levels, the rods in the retina of the human eye are more dominant than the cones, and color perception is lost. As the brightness becomes more intense, color appears to change. This is known as the Bezold-Brucke effect.\xa0\nPhillip's 12th edition page 38", 'role': 'assistant'}]