DBMS question.

Consider a relation with the schema T(A,B,C,D) with functional dependencies AB C, BC D, CD A, and AD B. Answer each part below, and show all work (that is, show work towards computing closures). 1. What are all the non-trivial FDs that follow from the functional Ensure all of your FDs have a single attribute on the right- hand side. 2. What are all the keys of T? 3. What are all the superkeys for T that are not keys