Tax Year Prior to 2020: USA (H1b) non-US citizen moved to Canada as Permanent Resident

Hi,

 

Me and my wife both were working in the US from June 2017. Both on H1B visa. We both left US in April 2019 for good. Now while filing taxes do we have to file a dual resident return or a resident return?

if we file a resident return can we file married jointly?

Which will be better to save on taxes? @LinaJ2020