A Genetic Theory Says That a Cross Between Two Pink $\neq$

A genetic theory says that a cross between two pink flowering plants will produce red flowering plants a proportion p = 0.25 of the time. To test the theory, 100 crosses are made and 31 of them produce a red flowering plant. Is this evidence that the theory is wrong?
What are the null and alternative hypotheses in this situation?

A) H₀: p = 0.25 H_a: p > 0.25
B) H₀: p = 0.25 H_a: p $\neq$ 0.25
C) H₀: p = 0.31 H_a: p > 0.31
D) H₀: p = 0.31 H_a: p $\neq$ 0.31