Which of the following may be included in thenull hypothesisfor a chi-square test forindependence?

A.H₀: ₁= ₂= ₃

B.H₀:Men = 50%;Women = 50%

C.H₀:Brand A = 30%;Brand B = 25%; Brand C = 25%; Brand D = 20%;

D.both answers B and C