Lincoln's Attempts to Preserve the Union Led Him to Take

Lincoln's attempts to preserve the Union led him to take questionable actions as president,such as

A) promoting and demoting military commanders without Congressional approval.
B) calling for a blockade and increasing the size of the army after the attack on Fort Sumter.
C) suspending the right to trial by jury.
D) risking the loyalty of the Border States by making the abolition of slavery the Union´s aim at the outset.
E) refusing to implement a draft, or conscription law, during the war.