Refer to two projects with the following cash flows: What are the internal rates of return on projects A and B ? (Round your answers to 2 decimal places.) Problem 8-38 Replacement Decision (LO4) A forkift will last for only 2 more years. It costs $5,000 a year to maintain For $20,000 you can buy a new lift that can last for 10 years and should require maintenance costs of only $2,000 a year. a. If the discount rate is 5% per year, should you replace the forkiff? (Round your onswers to the nearest whole dollor.) b. If the discount rate is 10% per yeat, should you replace the forkin? (Round your answers to the neorest whole dollar)