2. Size1 and size2 are the sizes of two files, and space is the amount of available space on a CD. Write a function that takes these integer numbers are parameters and figures out the largest combination of files that fit on a CD. The method should return 3 if both files fit together, the file number(1 and 2) corresponding to the largest file that fit by itself (1 if the files are the same size), or 0 if neither file fits on the CD. Your function must have only one return statement.