Amembership committee of three is formed from four eligible members. let the eligible members be represented by a, b, c, and d. the possible outcomes include s = {abc, abd, acd, bcd}.
which statements about the situation are true? check all that apply.

there are four ways to choose the committee.
there are three ways to form the committee if person d must be on it.
if seven members are eligible next year, then there will be fewer combinations.
if persons b and c must be on the committee, there are two ways to form the committee.
if persons a and c must be on the committee, then there is only one way to form the committee.