You want your portfolio beta to be 1.3. Currently, the portfolio consists of $100 invested in stock A with a beta of 1.5 and $300 in stock B with a beta of .8. You have another $400 to invest and want to divide it between an asset with a beta of 1.7 and a risk-free asset. How much should you invest in the risk-free asset?

a. $200.15

b. $17.65

c. $50.25

d. $400.00

e. $382.35