Which answer would you prefer?

Well, most recruiters would say "the honest answer" - but the reality is that you need to make it clear that you want to be doing their kind of work; because that way they feel comfortable that you're not going to up and leave.

Honestly, upon some reflection and having done some talking to other people both currently in and (like me) formerly in recruiting, this question might indicate a place that's afraid of high turnover - or on a dimmer note, one where they're worried about the work environment might cause people to leave if they're not 100% bought-in on the company's methodology.