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
Systolic BP of a group of persons follows normal distribution curve. The mean BP is 120. The values above 120 are - 
Select and explain. 
A. 25%, B. 75%, C. 50%, D. 100%
C: 50%
Answer: C: 50% 
Explanation: Ans. is c i.e., 50%