Task: Question Answering
Input (English): Problem: in a certain pond, 35 fish were caught, tagged, and returned to the pond. a few days later, 35 fish were caught again, of which 2 were found to have been tagged. if the percent of tagged fish in the second catch approximates the percent of tagged fish in the pond, what ` s the approximate number of fish in the pond ?
Options: a. 400, b. 625, c. 875, d. 2500, e. 10 000
Output (English): c