In the xy-plane, line l is perpendicular to the graph of the function f(x) = 5x - 2.
Line l could be the graph of which of the following functions?
A.) g(x) = -5x
B.) g(x) = (-1/5)x
C.) g(x) = x - 2
D.) g(x) = (1/5)x
E.) g(x) = 5x
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