In 1864,the Proposed Thirteenth Amendment Abolishing Slavery

In 1864,the proposed Thirteenth Amendment abolishing slavery

A) was passed by the Senate but blocked by Democrats in the House.
B) was vetoed by Lincoln,who worried about its effect on the loyalties of the Border States.
C) was unanimously passed by both houses of Congress.
D) was blocked by the combined resistance of Lincoln and the Senate.