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
Motile spermatozoa found on a wet mount of vaginal secretions are indicative of intercourse within the past : 
Select and explain. 
A. 6 hours, B. 12 hours, C. 24 hours, D. 48 hours
C: 24 hours
Answer: C: 24 hours 
Explanation: 24 hours