Each of the following heuristics helps make a good module according to some implementability or aesthetic principle. Identify the principle. (a) Minimize the number of operations in a class. (b) Eliminate irrelevant classes from your design. (c) Do not nest control structures more than seven levels deep. (d) Never make a class to do a job that a class in a standard library already does. (e) Eliminate duplicate code whenever you find it. (f) Provide get and set methods for all attributes in a class that clients might be interested in, even if they are not all used in the current program. (g) Do not reuse variables to hold different data. (h) Avoid operations with only a single line of code. (i) Keep operation parameters to five or less.