Which of the following inferences may be drawn from the discussion of Lu Yu’s work?

A.Before A. D. 800, it was largely unknown how to cultivate tea.

B.Some people even today drink tea for reasons other than its physical benefits.

C.Drinking tea was primarily a Zen Buddhist practice until the late 700s.

D.The Classic of Tea is one of the earliest works of Chinese origin that is concerned with agriculture.

E.Lu Yu was interested in popularizing tea in countries other than China.