Q3. Functional Dependency \& Normal Forms [35=15Marks] 3.1. Consider a relation R(A,B,C,D,E) with the following dependencies: {AB>C,CDE,DEB} Is AB a candidate key of this relation? If not, is ABD ? Explain your answer. a. What are some of the nontrivial FDs that can be inferred from the given FDs? b. Indicate which dependencies if any are not preserved by the BCNF decomposition