Select the correct answer. I will give brainliest

An archaeologist working at a Mesopotamian settlement found some writing on a clay tablet. When he translated the writing, he found that it contained information about a year when crops did not grow well, even though there was enough rainfall. Which possible reason for the decline of Mesopotamian civilizations would fit the situation described on the clay tablet?

A. poor leadership

B. over-irrigation

C. war

D. overburdened bureaucracy

E. scarcity of non-food resources