Answer: I don't know of the book you read, but..
Authors use historical times and revise them in such a way it's believable, immersive, and informative. They make sure their use of history isn't changed into an outlandish fashion to fit the time it's set in. They usually do this because you can't go back in history and show them what happened, so you must create a fictional yet historical piece to preserve the time.
The answer to this question is logos
As long as you clearly state the sources and resources of information it should be fine.
Answer:
I went out to the hazelwood,
Because a fire was in my head,
And cut and peeled a hazel wand,
And hooked a berry to a thread;
And when white moths were on the wing,
And moth-like stars were flickering out,
I dropped the berry in a stream
And caught a little silver trout.
Head rhymes with thread in line 4.
Out rhymes with trout in line number 8.
Im pretty sure that it’s B. Because in academic writing you should give attention to all sides of the issue.