Answer: A) Security A
Step-by-step explanation:
Using CAPM, the expected return of a security is;
Expected return = Risk free rate + beta ( Market return - Risk free rate)
Security A
= 5% + -0.25 ( 12% - 5%)
= 3.25%
Security B
= 5% + 1.1 ( 12% - 5%)
= 12.7%
Security C
= 5% + 0.75 ( 12% - 5%)
= 10.25%
Security D
= 5% + 2.00 ( 12% - 5%)
= 19%