If You Found a Mutation,involving the Loss of Two Bases,which

If you found a mutation,involving the loss of two bases,which was present in humans living on all four continents which you could test but was absent in close relatives such as gorillas and chimps,what would this imply?

A) Two bases were actually insertions in the nonhuman primates.
B) Deletion arose before the branch between humans and nonhuman primates.
C) Deletion arose multiple nonhuman primates.
D) Deletion arose at least six times in different human populations.
E) Deletion arose after the branch between humans and nonhuman primates.