A Genetic Theory Says That a Cross Between Two Pink

Multiple Choice

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 is the P-value for this significance test?

A) 0.0808
B) 0.1616
C) 0.5000
D) 0.9192