Hi everyone, can somebody help me/guide me on how to fill the question 12b on the application? I've neer filed my taxes until this year since I came to Canada (2014). So this year ( April 2018) I submitted all my taxes at once (2014,2015,2016 and 2018). My question is about the field "Required to File", how do I know my answer is "yes" or "no" ? Any guides I can use to base myself? Thanks in advance 
