For a binary half subtractor having two inputs A and B the correct sets of logical expressions for the outputs D (A - B) and X = Borrow are

For a binary half subtractor having two inputs A and B the correct set

1.	For a binary half subtractor having two inputs A and B the correct sets of logical expressions for the outputs D (A - B) and X = Borrow are
A.	D = AB + A̅B, X = A̅B
B.	D = A̅B AB̅, X = AB̅
C.	D = A̅B + AB̅, X = A̅B
D.	D = AB + A̅ B̅, X = AB̅
Answer» D. D = AB + A̅ B̅, X = AB̅