This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Disorders of menstruation, Subject name: Gynaecology & Obstetrics
[{'content': 'The most common source of vicarious menstruation is : \nSelect and explain. \nA. Hea, B. Lungs, C. Nose, D. Kidney', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Epistaxis during menstruation Menstruation may initiate nasal irritation or nasal allergy. This may be due to state of heightened nervous and vasomotor instability or due to pre menstrual fluid retention Ref:Disease of ear nose and neck, PL Dhingra and Sruthi Dhingra,Pg 177. Internet sources.', 'role': 'assistant'}]