An entomologist writes an article in a scientific journal which claims that fewer than 20 in ten thousand male fireflies are unable to produce light due to a genetic mutation. Assuming that a hypothesis test of the claim has been conducted and that the conclusion is to reject the null hypothesis, state the conclusion in nontechnical terms. Be sure to address the original claim.

a) There is sufficient evidence to support the claim that the true proportion is less than 20 in ten thousand.

b) There is not sufficient evidence to support the claim that the true proportion is less than 20 in ten thousand.

c) There is not sufficient evidence to support the claim that the true proportion is greater than 20 in ten thousand.

d) There is sufficient evidence to support the claim that the true proportion is greater than 20 in ten thousand.