Answer:
The option that is correct is B.
When you are embedding the quotation in your sentence you are using the quotation marks and continuing as the a part of the sentence. Thus, there is zero capitalization here. If you had wanted to use the sentence in its original form and start with a capital letter you would have to use a colon and start in a new line.
Answer:
The author explained that he “had begun to write a masterpiece.”
Explanation:
