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: Medicine
Duration of pain is angina is - 
Select and explain. 
A. 2-5 mins, B. 5-30 mins, C. 30-60 mins, D. > 1 hour
A: 2-5 mins
Answer: A: 2-5 mins 
Explanation: None