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 FileScenarioStarting salaryIncrease rateSaving rateReturn rate$1$$ $55,0002\%15\%7\%2$$ $70,0002\%10\%7\%3$$ $68,0003\%15\%7\%4$$ $72,0003\%10\%7\%$Which scenario generates the highest retirement savings at the end of $10$ years? What is the amount?Note: Round "Amount" to $2$ decimal places.Which scenario generates the lowest retirement savings at the end of $20$ years? What is the amount?Note: Round "Amount" to $2$ decimal places.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.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 places.