4. Let X be any set, and let F be a collection of subsets of X, each of size exactly n (you can assume that n is sufficiently large if needed). (a) (15 points) Prove that if |F| 0 that doesn't depend on n. 4. Let X be any set, and let F be a collection of subsets of X, each of size exactly n (you can assume that n is sufficiently large if needed). (a) (15 points) Prove that if |F| 0 that doesn't depend on n