Design a combinational circuit with three inputs: A, B, and C, D and the output W. The output should be 1 only when the values of A, B interpreted as an unsigned integer (AB) is equal to the values of C, D interpreted as an unsigned integer (CD). For example, for input 0000, W should be 1 whereas for input 0110, w should be 0. Make sure that you clearly show your work.