>>breadw+2J
Breach of contract seems to be the major one - from
https://www.scribd.com/document/709742948/Musk-vs-OpenAI page 34 has the prayers for relief. B and C seem insane to me, I don't see how a court could decide that. On the other hand, compelling specific performance based on continual reaffirmations of the founding agreement (page 15)...seems viable at a glance. Musk is presumably a party to several relevant contracts, and given his investment and efforts, I could see this going somewhere. (Even if his motivations are in fact to ding Microsoft / spite Altman).
IANAL