How did population distribution and density affect the damage caused by the red river floods of 2009 and 2010?

Below are the choices tha can be found elsewhere:

A. Loss of life was limited

B. Hundreds of thousands died

C. Causualties were very high

D. It played no role

The population distribution and density affect the damage caused by the red river floods of 2009 and 2010 by hundreds of thousands died.