Palacios Incorporated estimates that its retained earnings break point (BPRE) is $45 million, and its WACC is 14.8 percent if common equity comes from retained earnings. However, if the company issues new stock to raise new common equity, it estimates that its WACC will rise to 15.8 percent. The company is considering the following investment projects: Project Size IRR A $18 million 16.20% B 6 million 15.10 CDE 5 million 15.50 15 million 15.70 10 million 15.90 What is the firm's optimal capital budget?