The following sentences are not suitable for use in a specific language environment: ()

One of the following sentences is inappropriate in a specific language situation: (b) A. There is a slogan hanging on the wall of a library: "Knowledge makes people progress, and knowledge is power."

B. A slogan was posted in the classroom of a middle school: "Life should be happy, suffering first and then being quick."

C. A sign was put up at the school gate of a middle school: "Students, please wear the school badge when entering or leaving the school."

A banner was hung in a gymnasium in D: "Rush out of Asia and go to the world".