What Recommendations Were Made by Chinese Physicians in 700 AD

What recommendations were made by Chinese physicians in 700 AD that influenced Chinese people to eat more grains and vegetables than meat?

A) The belief that some foods came from the devil and should be avoided
B) The belief that people needed to eat a balance of foods, flavors and textures
C) These physicians were also farmers who wanted to promote their crops.
D) Animals were considered sacred.