Consider the following relation schema: WORK(Operator, Item-Made, Machine, Date). (1) Formulate the following constraints on this relation schema as functional dependencies: (a) an operator can work on only one machine on the each Item-Made(e.g., skirt, hat)must be made on the same machine. (2) Assume that the following functional dependencies on relation schema WORK: {Operator, Machine} rightarrow {Item-Made, Date), Item-Made rightarrow Machine are given.(Do not consider the F.D.s in the above Question (1)). Is relation schema WORK in 3NF with respect to this given set of F.D.s? Why