Don Cardi, I need to rewatch the scene but didn't Michael say neither of them first? As if Michael was being naive that either of them could have done it?
I could be wrong, and be thinking of another movie but I think he made a comment first that pisses off Sonny.
He pisses off Sonny when Sonny tells him to leave the office because he don't want Michael hearing certain things. And Michael defies Sonny telling him that Vito is HIS father also. Sonny then poses the question to him, saying something like "Ok college boy, who set up the old man?" And if memory serves me correctly Michael ponders for a moment or two, and then replies that neither Clemenza or Tessio did. I'm going off of memory here as I haven't watched that scene in quite some time. But it went down something like that.
