​Which of the Following Statements Is Most Accurate

Multiple Choice

​Which of the following statements is most accurate?

A) ​Andean people have historically been adapted to high altitude, but today they are losing these attributes.
B) ​Andean people have adapted culturally to high altitude, but biological adaptation is not possible.
C) ​Andean people have adapted biologically to high altitude, but cultural adaptation has been extremely difficult.
D) ​Andean people are both culturally and biologically adapted to high altitude.