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

Select from the following. [I] Yes; [II] No; [III] It's impossible to say;
[II]