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 5 Stream A $0 $100 $450 $450 $450 $250 Stream B $0 $250 $450 $450 $450 $100 Stream A $ Stream B $ b. What are the PVs of the streams at a 0% discount rate? Round your answers to the nearest dollar. Stream A $ Stream B $