I think B
I think quite simply that Grindelwald is lying to Credence in some way, so I'm actually excited to see how that plays out. I am less OK with Minerva being alive since I remembered that the McGonagalls weren't a wizarding family and realised it wasn't just a passing reference, but if it was confirmed to be film canon instead of book canon then I probably wouldn't object as much.
I also want to know about Newt and Tina's relationship :D