# 16. In a half-subtractor circuit with X and Y ...

16. In a half-subtractor circuit with X and Y as inputs, the Borrow (M) and Difference (N = X - Y) are  given by

(A) M = X, ⊕ Y, N = XY

(B)  M = XY,      N = X⊕Y

(C) M = $\overline X$Y , ⊕ N = X⊕Y

(D) M = XY      N = $\overline {X⊕Y}$

Hint: