It's not a cause to help others, but to help themselves. The seniors of Altamont High want the administration of their school to add a coffee bar to the library. A coffee bar, the seniors argue, would make students more likely to visit the library and be tempted to read books. They also believe that a coffee bar would help make money for the school. As an added bonus, seniors also claim that they will be much more awake for first period. Although the seniors are putting up signs and doing press interviews, the principal of Altamont High School has yet to comment on the matter. Which sentence serves as the best introductory sentence to the above paragraph?

A) Coffee can be quite stimulating and help students focus.
B) Seniors at Altamont High School are working for an unusual cause.
C) Some people wish that they had coffee available before their earliest class.
D) Some parents are opposed to having coffee served in the high school library.