Answer:
The fund with the highest ratio is Fund B.
Explanation:
Risk-free return = 6%
The average return on the market portfolio = 19%
The ratio equation formula is as follows:
FUND A: Return on fund - Risk free rate - Beta (Return on market portfolio - Risk free rate)/Standard deviation of fund
FUND A : 20 - 6 - 0.8(19 - 6 ) / 4 = 0.9
FUND B : 21 - 6 - 1(13)/1.25 = 1.6
FUND C : 23 -6 - 1.2 (13 ) /1.2 = 1.167
Therefore, the fund with the highest ratio is Fund B.