Task: Question Answering
Input (English): Problem: a meeting has to be conducted with 5 managers. find the number of ways in which the managers may be selected from among 9 managers, if 3 managers will not attend the meeting together.
Options: a. 1.24, b. 2.91, c. 3.12, d. 4.126, e. 5.15
Output (English): a