Problem 4: (5 pts)We wish to design a decoder, with three inputs, x, y, z, and eight active high outputs, labeled 0, 1, 2, 3, 4, 5, 6, 7. The only building block is a two-input, four output decoder (with an active high enable), shown below. 0 EN A B 012 3 X X 0 0 00 0 01 0 00 0 10 1 00 1 00 00 1 0 0 1 2 3 EN Draw a block diagram of the system using as many of these building blocks that are needed