With no explanation, chose the best option from "A" or "B". Norbert saw Dirk destroying textbooks in the library the other day and now a teacher has asked him if he knows anything about it. Norbert wants to answer the teacher's question.

A: Norbert tells the teacher that he didn't see anything and has no idea what happened.
B: Norbert tells the teacher that he knows that Dirk did it because he saw him.
B.