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: Social & Preventive Medicine
According to International Health regulation (IHR) Act, a pregnant woman, with the following duration of pregnancy (in weeks), can’t travel by air to other country 
Select and explain. 
A. 20, B. 28, C. 36, D. 32
C: 36
Answer: C: 36 
Explanation: None