Is option A the same as option B except for a factor of 2?

Anyways, I prefer option B. From a theoreticall point of view, the only things that should matter are your EV and variance at the relevent levels, and how big your roll is. What limits you have been playing in the past may have an indirect effect on your EV at various levels (maybe even a bit on the variance, probably negligable though) but it should have no direct effect on your decision to play whatever stakes

In option C, there is a huge dependence on what limits you have been playing in the past, which doesn't make a lot of sense theoretically