Your Mother's Well-Diversified Portfolio Has an Expected Return of 12

Your mother's well-diversified portfolio has an expected return of 12.0% and a beta of 1.20.She is in the process of buying 100 shares of Safety Corp.at $10 a share and adding it to her portfolio.Safety has an expected return of 15.0% and a beta of 2.00.The total value of your current portfolio is $9,000.What will the expected return and beta on the portfolio be after the purchase of the Safety stock?
R_p b_p

A) 11.69%;1.22
B) 12.30%;1.28
C) 12.92%;1.34
D) 13.56%;1.41
E) 14.24%;1.48