Consider a relation with schema R(A, B, C, D) and FD's: BC D, D-A, and A-B (15 Points) Report any five nontrivial FD's that can be derived from the given FD's. Use properties like Transitivity, and Augmentation. 2(15 Points) Find the attribute closure for the following attribute sets: {AB), {D), (BC]) 3 15 Points) What are all the candidate keys of R