Aluminum Is More Reactive Than Iron Is,but Iron Corrodes More

Multiple Choice

Aluminum is more reactive than iron is,but iron corrodes more quickly.This occurs because

A) aluminum is reduced in the presence of oxygen while iron is oxidized.
B) aluminum develops a coating of aluminum oxide, which protects it from further reaction.
C) iron is exposed to both oxygen and water, while aluminum is rarely exposed to water.
D) iron has a lower density than aluminum does.