For each of the following relations, indicate the normal form for that relation. If the relation is not in third normal form, decompose it into 3NF relations. Functional dependencies (other than those implied by the primary key) are shown where appropriate. 

a. CLASS(CourseNo, SectionNo)
b. CLASS(CourseNo, SectionNo, Room)
c. CLASS(CourseNo, SectionNo, Room, Capacity) [FD: Room → Capacity]
d. CLASS(CourseNo, SectionNo, CourseName, Room, Capacity) [FD: CourseNo → CourseName; FD: Room → Capacity]