Pls help will Mark brainliest How did the Sumerians increase food production? Select all that apply.

A. They brought in rich soil from beyond Mesopotamia.
B. They imported new types of crops from Europe.
C. They irrigated dry land to expand their farmlands.
D. They used oxen-drawn plows and seed funnels to plant crops more quickly and easily.
E. They relied solely on slave labor to increase food production