A paint store is offering a package that consists of four cans of paint that can be chosen out of six possible colors. a) The same color cannot be chosen multiple times. Write a code that prints all the possibilities that a customer can select. Does this problem correspond to permutation or combination? With or without replacement? b) The same color can be chosen any number of times. Write a code that prints all the possibilities that a customer can select. Does this problem correspond to permutation or combination? With or without replacement?