This is a multiple choice question. Select one from a,b,c,d and explain why.

7. Let m2 2 and n 2 2 be integers. What does 2 count? (a) The number of ways to choose an ordered pair (x, y) from a group consisting of m men (b) The number of ways to choose an ordered pair (x, y) from a group consisting of m men c) The number of ways to choose an unordered pair of people from a group consisting of (d) The number of ways to choose an unordered pair of people from a group consisting of and n women, where r must be a man and y must be a woman. and n women, where r and y cannot both be men m men and n women, where at least one man must be chosen. m men and n women