Derive the Boolean expression of a combination logic from the following truth table, where A, B, C are input variables and D is output. Draw the circuit diagram to implement it. Show your working steps. The full subtractor is a combinational circuit, which is used to perform subtraction of three input bits: the minuend X, subtrahend Y, and borrow in B_in. The full subtractor generates two outputs bits: the difference D and borrow out B_out. B_in is set when the previous digit borrowed from X. Thus B_in is also subtracted from X as well as the subtrahend Y. Or in symbols: X-Y- B_in. The full subtractor generates a borrow out when it needs to borrow from the next digit. Since we are subtracting X by Y and B_in, a borrow out needs to be generated when X