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: Forensic Medicine
One of the following is a sure sign of rape : 
Select and explain. 
A. Ruptured hymen in a girl aged 20 years, B. Presence of semen in the posterior fornix in a girl age 20 years, C. Presence of semen in the posterior fornix in a girl age 14 Years, D. Presence of semen in the posterior fornix in a married girl age 16 years
C: Presence of semen in the posterior fornix in a girl age 14 Years
Answer: C: Presence of semen in the posterior fornix in a girl age 14 Years 
Explanation: C i.e. Semen in fornix in a girl < 14 years