How do the ruins of buildings show us that temples played a dominant role in Sumerian cities?

A. The writings left behind on walls of the buildings explain how important temples were.

B. Houses and work areas were built surrounding the temple.

C. The Sumerians painted animals on the walls of the buildings that appeared to be sacrifices for the temples.

D. The tombs of the Sumerian people were found in the ruins that surround the temples.