Calculate the required rate of return for the Wagner Assets Management Group, which holds 4 stocks. The market's required rate of return is 18.0%, the risk-free rate is 7.0%, and the Fund's assets are as follows:

Stock	Investment	Beta
A	$200,000	1.50
B	300,000	-0.50
C	500,000	1.25
D	1,000,000	0.75

Select the correct answer.

15.39%

15.32%

15.25%

15.18%

15.46%