give final solution !!
Extracted text: Exercise 19.13 Consider a relation R with five attributes ABCDE. 1. For each of the following instances of R, state whether it violates (a) the FD BC D and (b) the MVD BC →→ D: (a) { } (i.e., empty relation) (b) {(a,2,3,4,5), (2,a,3,5,5)} (c) {(a,2,3,4,5), (2,a,3,5,5), (a,2,3,4,6)} (d) {(a,2,3,4,5), (2,a,3,4,5), (a,2,3,6,5)} (е) {(а,2,3,4,5), (2,а, 3,7,5), (а,2,3,4,6)} (f) {(a,2,3,4,5), (2,a,3,4,5), (a,2,3,6,5), (a,2,3,6,6)} (з) {(а,2,3,4,5), (а,2,3,6,5), (а,2,3,6,6), (а,2,3,4,6)} 2. If each instance for R listed above is legal, what can you say about the FD A B?