ii. Given the truth table of a combinational circuit that accepts three input bits: minuend (X), subtrahend (Y) and previous borrow (Bp) and produce two output bits: difference (D) and borrow next (BN). Implement the Boolean function for D and By using 74LS138 IC and external 74XX series logic gates. X Y BP B D 0 0 0 0 0 0 0 1 1 1 0 1 0 1 1 0 1 1 1 0 1 0 0 0 1 1 0 1 0 0 1 1 0 0 0 1 1 1 1 1