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}
1.The expression DE = E.
2.E(D∩F) is {25}.
3.FD
4.(E∩F) is the empty set.
5.Set E is infinite.