A mutual fund manager has a $20 million portfolio with a beta of 1.7. The risk-free rate is 4.5%, and the market risk premium is 7%. The manager expects to receive an additional $5 million, which she plans to invest in a number of stocks. After investing the additional funds, she wants the funds required return to be 15%. What should be the average beta of the new stocks added to the portfolio?

a. 1.5

b. 1.0

c. 1.0

d. 0.7

e. None of the above