I think it is A because for C and D the author wouldn’t write a book just for you to “find his mistake” and they don’t want to confuse the reader because they won’t understand the story. For B the author most likely wouldn’t want you to be emotional so i pick A. most readers like the suspense and it makes them want to read more
As feud is to quarrel. The first pair are synonyms that mean mostly the same thing. The trick to questions like that is to figure out the relationship between the given pair to find the best matching pair.
