For Several Hundred Years,Tikal Was Able to Sustain Its Ever-Growing

For several hundred years,Tikal was able to sustain its ever-growing population.Then the pressure for food and land reached a critical point,and population growth was halted.At the same time,warfare with other cities was becoming increasingly destructive.This is marked archaeologically by all of the following except:

A) by the advent of nutritional problems as evidenced by bones from burial.
B) by the construction of a system of defensive ditches and embankments.
C) by the construction of artificially raised fields in areas that were flooded each rainy season.
D) large,irrigation waterworks.
E) existence of abandoned houses on prime lands.