Which of the Following Examples Best Illustrates Culture-Gene Coevolution

Which of the following examples best illustrates culture-gene coevolution?

A) A population began farming a healthier strain of rice, but it contains a mild toxin.This led the population to develop a genetic mutation that allows people to safely digest the toxin.
B) A population could not bury its dead because the climate was too cold, making the ground too hard to dig.This led the population to develop a funeral ritual of offering its dead to the animals.
C) The average height of a country has increased within a year due to an influx of very tall immigrants, carrying with them their genes for height.
D) A population lives in a very cold climate that has constant snowstorms, which has led to the development of a genetic mutation that causes people to have a lot of body fat to keep warm.
E) The average body-mass index (BMI) of a population has improved in a year due to the population drinking more red wine and having a more positive attitude about food.