Shown below is the block diagram of the datapath that was used for Greatest Common Divisor (GCD) calculation in the lab task. 19 else selA SelB LoadA LoadB AeqB else AltB Loadgcd done Y = A-B; end if end if Approach B: if (AltB = 1) P = B; Q=A; P = A; Q = B; Comparator Y=P-Q MUX To utilize a single subtractor, two designers suggested the following approaches, namely Approach A and Approach B using AltB signal from the comparator Approach A: if (AltB = 1) Y = B-A; VRegister Sub GCD MUX VRegister Sub Tristate Buffer Would both approaches produce the same result? If not, which approach would produce the desired result? Justify your answer qualitatively with the aid of block level digram generated by both approaches.