Answer the following questions for this relational schema and functional dependencies: R (A, B, C, D, E, F, G, H, I) A-CC DA,c-D 1. List all candidate keys of R. (2 marks) 2. Does the functional dependency A,C>I hold? (1 mark) 3. Does the functional dependency B F hold? (1 mark) 4. Normalize R into BCNF. (6 marks)