Please explain

4. (20pts.) For each relational schema given below and its corresponding FDs: (1) R(A,B,C,D), F-AB-C, C-D, C-A }, Candidate keys: (AB), (BC) (2) R (A, B, C, D, E), F (ACEBD, B C), Candidate key is (ACE) Answer the following questions: Is it in 3NF? Why? Is it in BCNF? Why