Somehow a question have two (or more) answers. Somehow that answers is similar, and it's exactly same.
So, is that possible to accept more than one answer?
I don't think that you can accept more that one answer. Now if there is more that one answer that are excellent, I don't think they can be identical, but if they are I think you should accept the first answer, and then up vote the other answer, but you can't accept both. My 2 cents.