Labor budget: calculating the fixed labor budget. Instead of the raises stated in Exhibit I.4e, assume that all benefits are 18% and all raises are 4%, and calculate the fixed labor budget for...

Labor budget: calculating the fixed labor budget. Instead of the raises stated in Exhibit I.4e, assume that all benefits are 18% and all raises are 4%, and calculate the fixed labor budget for January, February, and March. Assume that all the other assumptions in the exhibit remain the same. Explain why some salaries and benefits change from month to month and others do not.