Steve Brickson Currently Has an Investment Portfolio That Contains Four $\beta$

Steve Brickson currently has an investment portfolio that contains four shares with a total value equal to R80,000.The portfolio has a beta (( $\beta$ ) .) equal to 1.4.Steve wants to invest an additional R20,000 in a share that has ( $\beta$ ) . = 2.4.After Steve adds the new share to his portfolio, what will be the portfolio's beta?

A) 1.6
B) 1.9
C) 2.0
D) Not enough information is given to compute the portfolio's beta ( ( $\beta$ ) . ) .
E) None of the above is correct.