The graphs of a function f(x) and its derivative f'(x) are shown below. Decide which is the graph of f(x) and which is the graph of f'(x). 
A. Neither graph could be the derivative of the other.
B. f(x) is the dashed line; f'(x) is the solid line.
C. Either graph could be the derivative of the other.
D. f(x) is the solid line; f'(x) is the dashed line.
Answer: B
Mathematics
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