Carlos Is Comparing Four Groups (1, 2, 3, 4

Carlos is comparing four groups (1, 2, 3, 4. on their levels of communication apprehension. Which is the most parsimonious null hypothesis?

A) H₀: μ₁ = μ₂
H₀^{: μ}₂ ^{= μ}₃
H₀^{: μ}₃ ^{= μ}₄
H₀^{: μ}₁ ^{= μ}₄
B) H₀: μ₁ = μ₂ = μ₃ = μ₄
C) H₀: μ₁ ≠ μ₂
H₀^{: μ}₂ ^{≠ μ}₃
H₀^{: μ}₃ ^{≠ μ}₄
H₀^{: μ}₁ ^{≠ μ}₄
D) H₀: μ₁ ≠ μ₂ ≠ μ₃ ≠ μ₄