If Many Genes from Two Species Differ in About 5

If many genes from two species differ in about 5% of their bases and substitutions occur at an estimated rate of 5% per one million years then

A) approximately 1 million years have passed since the two species diverged.
B) approximately 5 million years have passed since the two species diverged.
C) approximately 10 million years have passed since the two species diverged.
D) approximately 20 million years have passed since the two species divergeD.
E) approximately 50 million years have passed since the two species diverged.