Answer:
The correct option is D.
Step-by-step explanation:
The given equations are


The slope intercept form of a line is

where, m is slope and b is y-intercept.
Rewrite the given equations is the slope intercept form.


Therefore the slope of first line is
and the slope of second line is
.

Since the product of slopes of two perpendicular lines is -1, therefore we can say that both lines are perpendicular to each other. Option D is correct.