Algebra and sets math problem

Question

Suppose A = {x |x ≤ −2, x ≥ 3} and B = {x | −1 ≤ x < 5}. Which statement is true?

1. A.-A ∪ B is all real numbers
2. B.-A ∩ B = ∅
3. C.-A' = {x | −2 ≤ x ≤ 3}
4. D.-B ⊆ {x | x ≤ 5}

NEED ANSWER QUICK

Answer 1

option C looks to be the best choice...

the complement of A is between -2 and 3