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 of the following best describes the "blind spot" of the eye? \nSelect and explain. \nA. Located 5 degrees lateral to the central point of vision, B. The exit point of the optic nerve, C. Contains only rods and thus has monochromatic vision, D. Contains no blood vessels', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The blind spot is located 15 degrees lateral to the central point of vision. It is the location where fibers that make up the optic nerve exit the globe of the eye. There are no photoreceptors in this location.', 'role': 'assistant'}]