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: Anatomy
[{'content': 'All of the following are coverings of a mature graffian follicle, except ? \nSelect and explain. \nA. Theca externa, B. Theca interna, C. Germinal cells, D. Granulosa cells', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Coverings of the mature or graffian follicle are (From inner to outer) * Innermost layer is the the granulosa cells* The theca interna* The theca externa', 'role': 'assistant'}]