During the Post-Civil War Debate Over Resuming the Exchange of Gold

During the post-Civil War debate over resuming the exchange of gold for greenbacks,

A) members of the Greenback party argued the returning to gold was not worth the economic pain.
B) Republicans argued that those who had loaned money to the government during the Civil War had the right to be paid in gold.
C) Republican argued that due to the Public Credit Act of 1869, bondholders were not required to be paid in gold.
D) None of the above is correct.
E) Only a and b are correct.