Choose the closest paraphrased version after the following sentence or the italicized part.
Besides , they [terrorists] don’t have access to the knowledge [to build an atomic bomb].（ ）
A.正确答案CBesides, it is none of their business to do that.
B.Besides, they are not knowledgeable enough to do that.
C.Besides, they can’t get the necessary information.
D.Besides, it is difficult for them to get an opportunity.
