B: I mean, you can't guarantee that they wouldn't escape from prison and do it again. A: Right. And then do it all over again. Uh-huh. B: And I don't think that rehabilitation is effective.

Can we draw the following conclusion (choose your answer)?
rehabilitation is effective

Possible answers:
(A). Yes;
(B). No;
(C). It's impossible to say;
(B).