Problem 2. [15 points] Suppose we have the following three tuples in a legal instance of a relation s with four attributes ABCD: t1 = (1,3,3,1), t2 = (4,2,3,4), and t3-(1,3,3,5). 1. Which of the following dependencies do not hold over the relational schema S? [10 points] (a)A->B 2. Can you identify any functional dependencies that do hold over S? (think carefully for this!) [5 (b)CB (c) BC-> A (d) BC-> D points]