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Line j: y = 2/3x + 1/2
Line k: y = 1/2x + 2/3
Line l: y = 2/3x + 3/2
Line m: y = 3/2x + 1/2

These four lines have been graphed on the same coordinate grid. Which lines are parallel to each other?

A. k & m
B. k & l
C. j & l
D. j & m​