I had the same question for family size in IMM 5768 Q 14, I called 4 agents, some say its a mistake we made on the form, some say its not clear, some say its listed on the guide how to calculate the family Size, I am not sure what CIC will do with our appswill they return the application if i made a mistake we made on the forms with UCI number & family Size as of 2016,2017?