Fact: It's D. D: 0 as wildshape per RAW, then a reversion without losing consciousness, also per RAW.
You've repeatedly ignored where wildshape says explicitly in multiple places that it goes to 0 in animal form before reversion, and ignored the official ruling in Sage Advice that came after the tweet you listed. At this point you are doing nothing but arguing in bad faith which makes you a troll. Stop trolling me and go troll somewhere else.
There is no sage advice that states that nor does it state there is a step between them. I am just trying to help you see how the math works in this instance, which isn't obviously working at all. Agree to disagree! Next time you have a Druid that has 1 hp left in wild shape and 50 in druid and he takes 10 damage, explain to him why he now has 42 instead of 41 which directly contradicts the RAW. There was no D answer, I even gave you a hint that it was A, it was really that simple.
I won't call you any names, as that would be trollish. I will wish you a good evening and hope you have a great weekend! We are all here to have a good time, no reason to revert to bullying or name calling.