A Flood Plain Has the Potential to Flood

A flood plain has the potential to flood. Why is this a problem?

A) floods are caused by drought cycles in the weather
B) floods are unnatural events caused by human activity
C) flood damage is permanent, causing major changes in the course of the bordering river channel
D) flood damage is extremely costly due to homes and businesses being built on the flood plain
E) when flood waters recede, the flood plain is left infertile for growing crops