This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Development period- week 1,2,3,4, Subject name: Anatomy
[{'content': 'Cells which surround the oocyte in Graafian follicle are called: \nSelect and explain. \nA. Discus proligerus, B. Cumulus oophorus, C. Luteal cells, D. Villus cells', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Oocyte lies eccentrically in the ovarian (Graafian) follicle surrounded by some granulosa cells called cumulus oophorus. Discus proligerus is the attachment point of the cumulus oophorus to the most peripheral granulosa cells of an antral follicle. Large fluid-filled antrum (A) Cumulus oophorus (CO) Membrane granulose (stratum granulose, SG)', 'role': 'assistant'}]