The graph of function g was obtained from the graph of function f, shown as a broken line, using a transformation as shown below.

Based on the graph, which equation can be used to describe g(x) in terms of f(x) if f(x) = x?

A. g(x) = f(x) + 3
B. g(x) = f(x + 3)
C. g(x) = f(3x)
D. g(x) = 1/3f(x)

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