Which of the Following Is Definitely an Example of Convergent

Which of the following is definitely an example of convergent evolution?

A) the blue whale and a chimpanzee both being mammals
B) two different populations of humans having different amounts of pigmentation
C) the African population possessing the sickle trait in areas where malaria is prevalent
D) Europeans and Africans developing lactose tolerance separately after the domestication of cattle
E) the African population possessing the sickle trait and the sickle-resistant mutation in the G6PD gene in areas where malaria is prevalent