In the figure, m = 170° and m = 52°.

If m = x, which equation could be used to solve for x?
A.
x + 52° = 170°
B.
x + 52° + 170° = 180°
C.
x = 170° + 52°
D.
x + 170° = 52°

A. x + 52° = 170°