Table 2B - Units and Costs Unit: 1 2 3 Cost: 45 35 55 Reference: Ref 2-2 4 65 5 76 6 87 In Table 2B the marginal cost of producing the last unit is: 0 45. 0 87. O 363 O 60.5. The risk-free rate is 5% and the market price of risk is 8%. Benarbia Corporation stock has a beta of 1.8, and the return on Benarbia's stock is estimated to be 16%. As a rational investor, you would: Table 2B - Units and Costs Unit: 1 2 3 Cost: 45 35 55 Reference: Ref 2-2 4 65 5 76 6 87 In Table 2B the marginal cost of producing the last unit is: 0 45. 0 87. O 363 O 60.5. The risk-free rate is 5% and the market price of risk is 8%. Benarbia Corporation stock has a beta of 1.8, and the return on Benarbia's stock is estimated to be 16%. As a rational investor, you would