5. Suppose relation R(A,B,C) has the tuples: A BC 0 1 2 0 1 3 45 6 46 3 Compute the bag union of the following three expressions, each of which is the bag projection of a grouping (Y) operation: 1. Tx(Ya.B.MAX(c)x(R)) 2. Tx(YB SUM(C)-x(R) 3. Tx(YA MIN(B)-x(R)) Demonstrate that you have computed this bag correctly by identifying, from the list below, the correct count of occurrences for one of the elements O a) 5 appears exactly twice O b) 4 appears exactly twice c) 1 appears exactly twice. d) 3 appears exactly twice