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 5 H Stream A 50 $150 $400 Stream B Stream A: $ $400 $250 $400 $400 $400 $250 $400 $150 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: $