How do you form questions in "passato prossimo"?

Question

I was just wondering how does one form questions when you use the tense "passato prossimo". Is it necessary that the verb comes first before the subject/doer? Or the syntax doesn't matter? For example, between the 2 sentences below, which one is correct? Or are both sentences accepted?> - *Che ha mangiato Paolo?*> - *Che Paolo ha mangiato?*

Answer 1

"CHE HA MANGIATO PAOLO?" is the correct form

CHE PAOLO... whould mean "which Paul" has eaten

but you can also say:

PAOLO, CHE HA MANGIATO?

so