Implement a full adder (a) using two 8-to-1 MUXes. Connect X, Y, and Cin to the control inputs of the MUXes and connect 1 or 0 to each data input. (b) using two 4-to-1 MUXes and one inverter. Connect X and Y to the control inputs of the MUXes, and connect 1s, 0s, Cin, or Cin to each data input. (c) again using two 4-to-1 MUXes, but this time connect Cin and Y to the control inputs of the MUXes, and connect 1s, 0s, X, or X to each data input. Note that in this fashion, any N-variable logic function may be implemented using a 2(N-1)-to-1 MUX