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
6 years old girl with vaginal spotting. Diagnosis is – 
Select and explain. 
A. Ovarian cancer, B. Foreign body, C. Sexual abuse, D. PID
B: Foreign body
Answer: B: Foreign body 
Explanation: A foreign body is commonly responsible for vaginal bleeding in pediatric patients.