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 Scenario 1 Starting salary $ 55,000 Increase rate Saving rate Return rate 2% 15% 78 2 $ 70,000 2% 10% 7% 3 $ 68,000 3% 15% 7% 4 $ 72,000 3% 10% 7% 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. Scenario generates the highest retirement savings Amount