Task: Question Answering
Input (English): Problem: the sum of the first n positive perfect squares, where n is a positive integer, is given by the formula n ^ 3 / 3 + c * n ^ 2 + n / 6, where c is a constant. what is the sum of the first 20 positive perfect squares ?
Options: a. 1,010, b. 1,164, c. 1,240, d. 2,316, e. 2,870
Output (English): e