The correct answer is B.
The first two sentences are establishing characteristic shared by both petroleum and coal. The word "however" is used to contrast the similarities already presented with the differences that will be stated in the following sentences.
I think it is the story of The Labyrinth
Answer:
Victor is responsible for creating the Monster and he is also responsible for abandoning it and setting in motion the train of events that result in the deaths of many of his family and friends. However, he rarely accepts that he is at fault and instead blames the Monster for its own actions.
