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
Median weight of 100 children was 12 kgs. The standard detion was 3. Calculate the percent coefficient of variance: 
Select and explain. 
A. 25%, B. 35%, C. 45%, D. 55%
A: 25%
Answer: A: 25% 
Explanation: Coefficient of variance = (SD/mean)x100 = (3/12)x100 = 25 Ref: Park 21st edition, page 787.