I---in London for many n to move back to China.A.livedB.was

I___in London for many n to move back to China.A.livedB.was livingC.have livedD.had lived选A不选D?
I___in London for many years ,but I've never regretted my final decision to move back to China.A.livedB.was livingC.have livedD.had lived选A不选D?