Task: Question Answering
Input (English): Problem: a pet store holds cats and dogs. if the difference between the number of cats and the number of dogs is 7. what could be the ratio of cats to dogs in the pet store ?
Options: a. 1: 3, b. 1: 4, c. 28: 35, d. 2: 5, e. 4: 6
Output (English): c