5. (15 points) Consider the following relation student which is used to record student's name, email, the course they took, the grade they received and who taught the course. student (name, email, course, instructor, grade) a. What are the reasonable FD set that you could state for the data in student relation? b. What are the keys for relation student? C. Is relation student in Boyce-Codd Normal Form (BCNF)? If not, decompose it into multiple tables to make each table in BCNF