The answer I think might be B
The author is the origin of the text. And when you are examining the source it is possible that you could look for the author's purpose.
If it had to be the same answer the beginning because you don't introduce characters in the middle or end!!!
If it can be different then conflict would be middle and characters would be begging because a conflict is most likely to be in the middle: the most action packed part of the book.
<span>Internal conflict, Macbeth can no longer pray; feels guilt.
Hope this helps!</span>