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: Pediatrics
[{'content': '6 years old girl with vaginal spotting. Diagnosis is? \nSelect and explain. \nA. Ovarian cancer, B. Ovarian cancer, C. Sexual abuse, D. ND', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Foreign body A foreign body is commonly responsible for vaginal bleeding in pediatric patients.", 'role': 'assistant'}]