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
In the absence of pregnancy, the corpus luteum functions for how many days : 
Select and explain. 
A. 8 to10, B. l0 to 12, C. 12 to 14, D. 18 to 20
C: 12 to 14
Answer: C: 12 to 14 
Explanation: 12 to 14