Do you play soccer on the weekend
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.
Why do you think that. i personally think the U.N. has been extremely helpful to america
A. They add a bit of humor to a serious mood. The fact that she asked them to bring her back a job is just funny, so it is definitely A.
