I'll give you a question, please answer with step-by-step reasoning process.
Of the below sentences, which one does *not* make sense?\nOptions:\n- Sentence A: "Police had to erect barriers to keep crowds back."\n- Sentence B: "Police had to erect statues to keep crowds back."\n

Sentence B
Statues are artworks and are not often used to keep crowds back.

.

The answer: Sentence B