Design a full-subtractor circuit with three inputs x, y, Bin in and two outputs Diff and B out using the following. The circuit subtracts x-y-Bin, where Bin is the input borrow, B out is the output borrow, and Diff is the difference: (a) Using basic and xor gates (1 mark) (b) Using universal gates (1 mark) (c) Using 2-to-4 Decoder (2 mark)