The Case of Lactase Persistence Is an Example of Culture-Gene

The case of lactase persistence is an example of culture-gene coevolution because

A) the genetic mutation for lactase persistence constitutes a form of transmitted culture.
B) a cultural practice (dairy farming) led to the selection for a genetic mutation (lactase persistence) among dairy farming populations.
C) of a genetic mutation (lactase persistence) ,despite there being no selection pressures,but it allows people to engage in a cultural practice (digest milk into adulthood) .
D) a genetic mutation (lactase persistence) led to the creation of a cultural practice (dairy farming) .
E) adults with lactase nonpersistence,but who drink a lot of milk,will develop the genetic mutation for lactase persistence.