I think the correct answer is C and we are all part of a virtual reality. I believe I first got this notion from Philip K Dick, the sci fi writer. It’s an unfathomable concept. It’s difficult to wrap my mind around. And yet… it makes sense. When I first started to think it was true, I was pissed off. It’s hard to take life seriously if this is the case. But that was just a phase. Eventually acceptance occurs and life goes on. And it actually makes it more fun.