Given 3 lines a,b,and c such that:
*line a is 3y=x-12
*line b contains points (1,-6) and (-1,0)
*line c is graphed below:
(-6,0)
FL-
(0, 2)
0
Which of the following statements is true?
A: line c is parallel to line b
B: line a is parallel to line b
C: line a is perpendicular to line c
D: line c is parallel to line a