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
True about post spinal headache 
Select and explain. 
A. Frontal, B. More in lying down, C. Low incidence with thin (25 G) needle, D. Increased by abdominal compression
C: Low incidence with thin (25 G) needle
Answer: C: Low incidence with thin (25 G) needle 
Explanation: C i.e. Low incidence with thin needle