During the Great War, Why Was the Sale of Liberty

During the Great War, why was the sale of Liberty bonds significant?

A) It allowed those who opposed the war to direct their funds toward unrelated economic endeavors.
B) It guaranteed a fixed rate of return to fund the war, with purchasers commonly viewed as patriotic.
C) It directly led to a change in the type of currency used in the United States, with the introduction of greenbacks.
D) It was a type of transaction that only involved individual Americans, rather than banks and investment houses.
E) It allowed the government to lower taxes as they prepared for war and led to decreased federal involvement in industry.