You are seeking an investment with the best risk/return profile. Using the coefficient of variance, which security will be selected?

a. Stock A (expected return 8.4% and standard deviation 13.8%)

b. Stock B (expected return 17.9% and standard deviation 43.4%)

c. Stock C (expected return 13.4% and standard deviation 22.3%)

d. Stock D (expected return 14.1% and standard deviation 21.3%)