One of the following is a sure sign of rape -

• A. Presence of semen in the posterior fornix in a girl age 20 yrs
• B. Ruptured hymen in a girl aged 20 yrs
• C. Presence of semen in the posterior fornix in a girl age 16 yrs
• D. Presence of semen in the posterior fornix in a girl age 14 yrs