Answer:
d. 4%.
Step-by-step explanation:
The computation is shown below;
We know that
Expected stock return = Risk free rate + Beta × Market risk premium
So,
Expected stock return X is
= 2% + 1.4 × 5%
= 9%
And,
Expected stock return Y is
= 2% +.8 × 5%
= 6%
Now
Expected Portfolio return Y and risk free asset is
= Weight stock y × return Y + Weight risk-free asset × Return risk-free asset
= .5 × 6% + .5 × 2%
= 4%