I'm assuming you're in your 3rd year? Sorry you're going through this but I would do A. Or A and B. I just can't imagine investing all this time, abuse, effort and sacrifices this long just to give it all up. And I know you said psychiatrists just prescribe drugs, but you can practice differently right? And Maybe the medical students and the area you're in is confounding your disdain even further for med school?
Perhaps getting a residency that is far away in an area you want to practice in will make a worlds difference. Or if all that doesn't help, then you can always get the degree in addition to MD.
And I have an exam coming up too and my hate for medical school always peaks during exam time, but I think the material is awesome. Sorry that sucks that you hate this crap. I mean I love it, but I hate the abuse so I can't imagine putting all this effort and on top of that hating the material.