a. Find the present values of the following cash flow streams at a 7% discount rate. Do not round intermediate calculations. Round your answers to the nearest cent. 0 1 2 3 4 $0 $450 Stream A Stream B Stream A: 5 $100 $250 $450 $450 $450 $450 $250 $100 SO $450 Stream 3:3 b. What are the PVs of the streams at a 0% discount rate7 Round your answers to the newest dollar Stream AS Stream BS