I'm preparing to submit my visa application for attending a conference in Canada as a Student. 5 months ago my father gave 9000 CAD. I kept that money in my account. I'll use my bank statement for visa. In this case will they ask for Source of fund? If my father write a letter to visa offier starting that he gifted me that amount. Will it be ok or my father personal documents like occupation details need to submit? Thanks in advance.