= {6, 7, 11, 12, 15} P = 6 , 7 , 11 , 12 , 15 = {4, 7, 12, 15, 20} Q = 4 , 7 , 12 , 15 , 20 = {3, 4, 11, 12, 16} S = 3 , 4 , 11 , 12 , 16 Given sets P , Q , and S above, which of the following sets represents ∩(∪) S ∩ ( P ∪ Q ) (the intersection of S with the union of sets P and Q )?