Which would be the best source for locating more specific information on the Emancipation Proclamation?

Question

Responses
A a copy of a speech by Abraham Lincolna copy of a speech by Abraham Lincoln
B a book, An Analysis of The Declaration of Independencea book, An Analysis of The Declaration of Independence
C a book, Primary Documents of American History Explaineda book, Primary Documents of American History Explained
D a newspaper from the year that the Emancipation Proclamation was issued

Answer 1

C a book, Primary Documents of American History Explained