For a Hypothesis Test in Which the Null Hypothesis Is $\pi$

Multiple Choice

For a hypothesis test in which the null hypothesis is $\pi$ ₁ - $\pi$ ₂ = $\pi$ , which of the following statements must be true?

A) To reject the null hypothesis, $\pi$ ₁ cannot be less than $\pi$ ₂.
B) Failing to reject the null hypothesis will mean that $\pi$ ₁ and $\pi$ ₂ are equal.
C) The sample proportions can only be approximated.
D) The null hypothesis can only be rejected if the sample proportions are not equal.