Problem 8-21 Multiple IRRs (LO2) Consider the following cash flows: a. Which two of the following rates are the IRRs of this project? Note: You may select more than one answer. Single click the box with the question mark to produce a check mark for a correct answers and double click the box with the question mark to empty the box for a wrong answers. Any boxes left with a question mark will be automatically graded as incorrect. b., c., and d. What is project NPV if the discount rates are 8%,20%, and 39% ? b., c., and d. What is project NPV if the discount rates are 8%,20%, and 39% ? Note: Negative amount should be indicated by a minus sign. Do not round intermediate calculations and round your final answer to 3 decimal places