I would say the climax because this is the part of the story where all of the drama and emotion is unfolding. This is also the part where people can't put down the book because it is so interesting, and you just want to know what's going to happen next.
Answer:
Yes, All you have to do it Make a Hook that makes your introduction interesting then you summaries your back ground information, after that you need to write a thesis statement then your done with introduction its pretty simple follow the instruction and you will be done.
I would consider B. a gothic writing but im not sure. Please let me know if im wrong.