Yeah, please provide us a unique reason why it will occur?
Me, I can't see any reason why it would fall in December, some says, last year, bitcoin turns so much high last December and I think same thing will happen this year. And I think the reason why bitcoin price is rising to fast is because Christmas day is getting closer, and that is the only reason I see as of now. Or maybe the fork which is coming this December, but I still can't tell whether it is true or not but I think I've seen it somewhere here in bitcointalk. As we all knew, when there is a fork, bitcoin price turns high. So your prediction is much too far to reality.