Which of the following is a reason why {x: 6 x 12} is not a correct set-builder representation of the set, {6, 7, 8, 9, 10, 11, 12}? (Check all that apply.)

Group of answer choices

It could include more elements than are actually in the set.

The bounds forxare incorrect.

Not all terms of the set are included.

It does not specify thatxis a natural number.