4 a. Find the present values of the following cash flow streams at a 9% discount rate. Do not round intermediate calculations. Round your answers to the nearest cent. 0 1 2 3 5 + Stream A $0 $100 $400 $400 $400 $300 Stream B $0 $300 $400 $400 $400 $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: $