Select the statements that are true based on the following given information. d = {x | x is a whole number} e = {x | x is a perfect square < 36} f = {x | x is an even number between 20 and 30} the expression d ∩ e is {1, 4, 9, 16}. the expression d ∩ f is {12, 14, 16, 18}. d ∪ (e ∩ f) is {all whole numbers}. (e ∩ f) is the empty set. the expression d ∩ (e u f) is 25