"I said you chose books and i chose looks," Mrs Wormwood said. "And who's finished up the better off?
Me, of course. I'm sitting pretty in a nice house with a successful businessman and you're left slaving
away teaching a lot of nasty little children the ABC."
these sentences come from the novel Matilda.
and my question is , in this sentence "And who's finished up the better off?"
who's = 'who is' or 'who has' ??