OK, new forum. Hmmm.
New Print dialog (see screenshot) makes it a bit more difficult to select a single page or page range(s). Oh, wait, I see no way to insert an image. That’s really sweet.
Back on topic: just have the 2 choices (All and Selected) always displayed. And don’t forget to help the user by automatically ticking the Selected radio button when they enter a page range. Just like Windows Print has done since the last century.