Why was president lincoln unable to persuade congress to accept his reconstruction plan?

The correct answer is letter "A - President Lincoln's plan did not allow Northerners to vote on the reconstruction act "

There exists the same question with the following choices:

A - President Lincoln's plan did not allow Northerners to vote on the reconstruction act

B - Congress believe that Freedmen bureau should be responsible for the reconstruction

C - Congress believe President Lincoln's plan was too difficult for the south

D - President Lincoln was assassinated before he was able to persuade Congress