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
Anti-D should be given following Rh+ delivery within: 
Select and explain. 
A. 6 hours, B. 24 hours, C. 72 hours, D. 7 days
C: 72 hours
Answer: C: 72 hours 
Explanation: 72 hours