Which of the Following Was Not One of the Reasons

Which of the following was not one of the reasons why both the North and the South were unprepared for war?

A) No one in either section had expected hostilities.
B) Neither the North nor the South had the necessary tax structure to finance the war.
C) Northerners were uncertain about Lincoln's ability to lead the nation.
D) The South had poor railroads and virtually no navy.
E) The Union had only a small army, and one third of its officers had joined the Confederacy.