Which of the Following Statements Exemplifies a Null Hypothesis

Which of the following statements exemplifies a null hypothesis?

A) There is no relationship between gender and jury verdicts.
B) Men are more likely than women to vote to acquit on juries.
C) Women are more likely than men to vote to acquit on juries.
D) Men are more likely to create hang juries (juries that cannot arrive at a verdict) than are women.
E) All of these choices illustrate the null hypothesis.