Sharon Stonewall Currently Has an Investment Portfolio That Contains 10 $\beta$

Sharon Stonewall currently has an investment portfolio that contains 10 shares that have a total value equal to R160,000.The portfolio has a beta (( $\beta$ ) .) equal to 1.0.Sharon wants to invest an additional R40,000 in a share with ( $\beta$ ) . = 2.0.After Sharon adds the new share to her portfolio, what will be the portfolio's beta?

A) 1.2
B) 1.5
C) 2.0
D) Not enough information is given to compute the portfolio's beta ( ( $\beta$ ) . ) .
E) None of the above is correct.