10. In this exercise, you modify the Kettleson application from this lesson. Use Windows to make a copy of the Kettleson Solution folder. Rename the copy Modified Kettleson Solution. Open the Kettleson Solution (Kettleson Solution.sln) file contained in the Modified Kettleson Solution folder. Open the designer and Code Editor windows.

Locate the btnCalc_Click procedure. Change the selection structure’s condition so that it tests for the opposite of what it does now, then make the appropriate modifications to the selection structure’s true and false paths. Save the solution and then start the application. Test the application twice, using 25000 and 15000 as the annual sales. Close the Code Editor window and then close the solution.