All of the Following Were Reasons the Senate Voted to Acquit

All of the following were reasons the Senate voted to acquit President Andrew Johnson except

A) opposition to abusing the constitutional system of checks and balances.
B) concern about the high-tariff, soft-money, and pro-labor views of radical Republican Benjamin Wade who would become president if President Johnson were convicted by the Senate.
C) fears of creating a politically destabilizing and uncertain period of time in the nation.
D) President Johnson promised to obstruct some of the Republican policies in return for remaining in office.
E) President Johnson promised not to run for president in 1868 if acquitted.