Using the accompanying Retirement_Calculator spreadsheet model, Claire wants to use Scenario Manager to compare the following retirement saving scenarios: Click here for the Excel Data File a. Which scenario generates the highest retirement savings at the end of 10 years? What is the amount? Note: Round "Amount" to 2 decimal places. b. Which scenario generates the lowest retirement savings ot the end of 20 years? What is the amount? Note: Round "Amount" to 2 decimal pleces. c. Which scenanio generates the second highest reirement savings at the end of 30 years? What is the amount? Note: Round "Amount" to 2 decimal places. c. Which scenario generates the second highest retirement savings at the end of 30 years? What is the amount? Note: Round "Amount" to 2 decimal places. d. For Scenario 4, if Claire would like to have $1 million at the end of 30 years, what would her saving rate need to be? How about at the end of 20 years? Note: Round your answers to 2 decimal olares