B without a question.
A I could not cope with in any way shape or form. There's nothing that could be done to make me anything near able to function.
B, I'd struggle majorly with not having my stuff. I have a set of stuff I always carry with me. Not having that would be a huge deal. But at minimum I'd need to have my medication. Between my meds and such, I'd totally be able to entertain myself. Who needs anything complicated to entertain. And no, I'd not talk to them about "small talk" stuff. If they talked about things that interested me, I'd do so, but if not, I'd just stim my way away, all day long.
For me, environment is key.