Task: Question Answering
Input (English): Problem: there are 7 executives, including the ceo and cfo, that are asked to form a small team of 4 members. however, the ceo and cfo may not both be assigned to the team. given this constraint, how many ways are there to form the team ?
Options: a. 25, b. 28, c. 30, d. 32, e. 35
Output (English): a