Which of the Following Is True of the Use of Molecular

Which of the following is true of the use of molecular evolutionary studies of human disease?

A) Molecular evolutionary studies are useful for identifying many diseases.
B) Molecular evolutionary studies are often used to determine the origin of emerging diseases.
C) Molecular evolutionary studies are important for developing vaccines against diseases.
D) Molecular evolutionary studies are used to track the effectiveness of polio vaccines in human populations.
E) All of the above