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: Gynaecology & Obstetrics
Vaginal bleeding in a neonate is commonly due to: 
Select and explain. 
A. Sarcoma boytroides, B. Trauma of delivery, C. Hormonal withdrawal, D. Viral infection
C: Hormonal withdrawal
Answer: C: Hormonal withdrawal 
Explanation: Hormonal withdrawal