Student in Canada since 2014, in 2018 got my pr card, is my Canadian residency changed?

i am a student since 2014 in Canada, in 2018 i got my pr card, so in the question, there is a : have you changed your Canadian residency  seems like you changed your residency.  do i need to chose yes? 

also i got the new SIN, but my T4 is using the old one, do i need let my boss changed the new  T4