Define “bounded above” for a set S ⊆ ℝ.

A ∃M ∈ ℝ such that s ≥ M for all s ∈ S

B ∃m ∈ ℝ such that s ≤ m for all s ∈ S

C Every s ∈ S satisfies s < 0

D ∃M ∈ ℝ such that s ≤ M for all s ∈ S

Correct Answer: Option D