What Was One of the Reasons That Congress Objected to the Readmission

What was one of the reasons that Congress objected to the readmission of Southern states to the Union under Johnson's plan?

A) The states had not made enough efforts yet to provide forty-acre homesteads for ex-slaves.
B) The states had been readmitted without agreeing to a reparations plan.
C) Many former Confederates were elected to high political office in those states.
D) The states had not yet rebuilt ten percent of their infrastructure as the plan required.
E) Many Southerners still believed secession had been right.