Hold a Diversified $100,000 Portfolio Consisting of 20 Stocks with $5,000

Multiple Choice

hold a diversified $100,000 portfolio consisting of 20 stocks with $5,000 invested in each.The portfolio's beta is 1.12.You plan to sell a stock with b = 0.90 and use the proceeds to buy a new stock with b = 1.80.What will the portfolio's new beta be?

A) 1.286
B) 1.255
C) 1.224
D) 1.194
E) 1.165