A pet store keeps track of the purchases of customers over a four-hour period. The store manager classifies purchases as containing a dog product, a cat product, a fish product, or a product for a different kind of pet. The data to the right was recorded. Complete parts (a) through (d) below. 89 customers purchased a dog product; 99 customers purchased a cat product; 22 customers purchased a fish product; 26 customers purchased a dog and a cat product; 8 customers purchased a dog and a fish product; 11 customers purchased a cat and a fish product; 6 customers purchased a dog, a cat, and a fish product; 34 customers purchased a product for a pet other than a dog, a cat, or a fish. a) how many purchases were for a dog product only? b) how many purchases were for a cat product only? c) how many purchases were for a dog or fish product? d) how many purchases were there in total?