Which of the following statements are correct?

A. Coffee is native plant of the Southern Ethiopian highlands.

B. Merino sheep are kept chiefly in the drier and warmer regions of temperate latitudes.

C. The most important factor affecting the silk industry is the availability of cheap female labour.

D. Robusta coffee is the most important in world trade among three major types of coffee.

E. Coffee contains tannin acid.

Choose the correct answer from the options given below: