Identify the true and false statements about the Flint, Michigan, water crisis.

A. Government officials acted quickly to remedy the problem.
B. The effects of lead exposure can be long-lasting and irreversible and are especially dangerous to children under the age of five.
C. While exposure to a small amount of lead is generally considered safe, the levels in Flint's water exceeded this amount.
D. Residents started to notice there was something wrong with their water not long after the city switched from Detroit's water source, Lake Huron, to the Flint River.