Yes, there is a risk there. You need to make sure that you put some phrase in there indicating that the student's answer wasn't really right. Just saying "that'

Yes, there is a risk there. You need to make sure that you put some phrase in there indicating that the student's answer wasn't really right. Just saying "that's one way to think about it" without clarifying that it's not quite correct for reason X will definitely do more damage than good. The trick is telling them they're wrong without making it sound like you are calling them stupid.