A company prefers projects with less risk per unit of return. If two projects it is considering has coefficients of variation of$,$ respectively, $1$ and $3,$ which of the two projects would the company prefer and why would it prefer it$?$ Choose the most correct answer.

a$.$

The project with the CV of $1$ as it carries less risk per unit of return

b$.$

The project with the CV of $3$ as it carries less risk per unit of return

c$.$

The project with the CV of $1$ as it carries more risk per unit of return

d$.$

The project with the CV of $3$ as it carries more risk per unit of return