Suppose you hold a portfolio consisting of a $10,000 investment in each of 8 different common stocks. The portfolio's beta is 1.30. Now suppose you decided to sell one of your stocks that has a beta of 0.80 and to use the proceeds to buy a replacement stock with a beta of 1.60. What would the portfolio's new beta be? Do not round your intermediate calculations. Round your final answer to 2 decimal places.

a. 1.70

b. 1.34

c. 2.10

d. 1.60