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 + AB, X = AB
B.	D = AB AB, X = AB
C.	D = AB + AB, X = AB
D.	D = AB + A B, X = AB
Answer» D. D = AB + A B, X = AB