Would the real Ace ending stand up, please? #DoctorWho

"Which path do you choose?" asks the cover of a book that knows damn well that Ace's ending is multiple choice at this point.

Anyway I'm not going to top these pictures, so At Childhood's End thoughts will just go in this thread.

First off, I just need to say, the title is genius. In fact, I'd even say it's ACE.