3 part citrus that I couldn't identify

I had a citrus rootstock shoot that had leaves with 3 parts which I couldn't identify. It looked like this . I did a Google search & came up with a possible identification

Poncirus Trifoliata (Trifoliate Orange)

or is it 'Troyer' or some other citrange (Poncirus x sweet orange hybrid). ?

is it or not?

citrus tree leaves with three parts - Google Search