Which of the Following Was the Primary Reason for the Fall

Multiple Choice

Which of the following was the primary reason for the fall of the Qin Empire upon the death of Shi Huangdi?

A) Shi Huangdi's son was a weak ruler.
B) The provincial aristocracy was complacent.
C) Incorporation in the empire of different ethnicities.
D) Unification of the nomads under Maodun.
E) Oppressive labor requirements of the population for military and infrastructure building.