Air pollution from the combustion of fossil fuels can lead to an increased occurrence of acid rain. If acid rain causes the water in a stream to become more acidic, what is the most likely effect on the geology of the stream bed?

A: The rocks in the stream bed weather at a slower rate

B: The population of fish in the stream increases

C: The population of the fish in the stream decreases

D: The rocks in the stream bed weather at a faster rate