--he did so has nothing to do with me a.whatever b.no matter

选A。whatever he did 无论他做什么。整句意思是 无论他做什么都和我无关。在这里,whatever引导主语从句,whatever he did 做主语,has 等等做谓语宾语等成分。并且此处只有whatever 在从句中充当did 的宾语。只能是what。whether 的话,少了 did的宾语。除非说 whether he did it 。所以排除。