A Research Project Examining Cholesterol Values Using a New Cholestcheck

A research project examining cholesterol values using a new Cholestcheck assay produces the following cholesterol values from a random sample of 14,25-year-old women: Mean = 137 mg/dL
2 standard deviations = 6 mg/dL
N = 14
The coefficient of variation percent for this assay is:

A) 1.14%.
B) 2.19%.
C) 4.38%.
D) 9.49%.