Assignment - 4 Design an arithmetic circuit with two selection variables, s, and so that generates the following arithmetic operations. Draw the logic diagram of one typical stage. $0 Cin = 0 C-1 0 0 F = A + B F-A FB F = A + B F = A + B + 1 F = A + 1 F = 3 + 1 F = A + B +1 1 1 1