Entrance Portfolio for the Emily Carr Institute

Hey I am totally confused about what ECIAD is looking for in their Foundation portfolio (I am going for a BFA Visual). 1. Are photos of everything acceptable or should I go with slides? 2. Does your sketchbook need to outline the creation or PROCESS of every piece in your portfolio? 3. we are supposed to Include works that are a reflection of your time and place in relation to the immediate world, tell a story, or show how you have developed a theme or idea in your work. is this supposed to be a common theme throughout the portfolio or are you supposed to breakdown each work in your sketchbook? If it is the underlying theme of the portfolio do you explain that in the begining?..I’m new to this please help!!!