Suppose you have read two different books on world war 2 and each book has different arguments about how the war started. Which of the following would be most useful in evaluating each argument?
A. Determine which author used the most persuasive language.
B. Determine which author wrote the longest book.
C. Determine which author used the most reliable sources.
D. Determine which author used more sources.
I'm leaning more towards c or d but I'm not sure.