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: Anaesthesia
Post Spinal Headache can last for 
Select and explain. 
A. Upto 10 min, B. Upto 10 hours, C. 7 - 10 days, D. Upto 10 months
C: 7 - 10 days
Answer: C: 7 - 10 days 
Explanation: C i.e. 7-10 days