Use the graph of the function f(x) to locate the local extrema and identify the intervals where the function is concave up and concave down.
A. Local minimum at x = 0; local maximum at x = 2; concave up on (0, ?); concave down on (-?, 0)
B. Local minimum at x = 2; local maximum at x = 0; concave up on (0, ?); concave down on (-?, 0)
C. Local minimum at x = 0; local maximum at x = 2; concave down on (0, ?); concave up on (-?, 0)
D. Local minimum at x = 2; local maximum at x = 0; concave down on (0, ?); concave up on (-?, 0)
Answer: B
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A. 
B. 
C. 
D. 
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A. 
B. 
C. 
D. 