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.
Answer:
Option A and B
Explanation:
The simple in-text citation includes the surname of the authors, then the year of publication and at the end is the page number of the citation. The in-text citation is always placed at the end of the sentence. This means that the mistake is not including the year of publication and placing the citation at the end of the sentence. So in the nutshell the correct answer here is option A (Not including the year of publication) and option B (Placing the in-text citation in the wrong place).
Its the water in the sink smelled bad!