How does the collection of multiple accounts of the night of President Lincoln’s assassination contribute to the central idea of the article?

A
They demonstrate the confusion and conflicting information surrounding the night of Lincoln’s assassination.
B
They argue, collectively, for increased diligence on the part of security and police surrounding the victims.
C
The demonstrate the critical need for national unity during a time of unthinkable loss.
D
They illustrate the unanimous national feeling that the loss of Lincoln will be tragic for the country.