Which one of the following is NOT logically equivalent to ¬ ∃x (∀ y (α) ∧ ∀ z(β))?

• A. ∀x (∃z (¬ β) → ∀ y(α))
• B. ∀x (∀z (β) → ∃y (¬ α))
• C. ∀x (∀y (α) → ∃z (¬ β))
• D. ∀x (∃y (¬ α) → ∃z (¬ β))