The picture below shows a river dam constructed to generate hydroelectric power. Image drawn to show a power plant and a dam. Point A is shown downstream from the dam.

Many people migrated from Location A after the dam was constructed. Which of these statements best explains why people avoided living in location A after the construction of the dam? The dam may have

A caused floods which harmed the ecology and agriculture.

B polluted the atmosphere by emitting harmful gases.

C produced acid rains because of harmful chemical reactions.

D Made land infertile because of toxic gases released by the power plant.