If H 0 1 2 0; H 1 1

If H₀ ∶ μ₁ − μ₂ ≥ 0; H₁ ∶ μ₁ − μ₂ < 0, which of the following is an equivalent statement? (More than one choice is possible.)
a) H₀ ∶ μ₁ − μ₂ < 0; H₁ ∶ μ₁ − μ₂ ≥ 0
b) H₀ ∶ μ₂ − μ₁ ≤ 0; H₁ ∶ μ₂ − μ₁ > 0
c) H₀ ∶ μ₁ − μ₂ = 0; H₁ ∶ μ₁ − μ₂ < 0
d) H₀ ∶ μ₂ − μ₁ = 0; H₁ ∶ μ₂ − μ₁ < 0