Question

Suppose A = {x |x ≤ −2, x ≥ 3} and B = {x | −1 ≤ x < 5}. Which statement is true?
A. A ∪ B is all real numbers
B. A ∩ B = ∅
C. A' = {x | −2 ≤ x ≤ 3}
D. B ⊆ {x | x ≤ 5}