Determine where the function is increasing and where it is decreasing.f(x) = x2 - 4x + 3
A. increasing on (-?, 2)
decreasing on (2, ?)
B. increasing on (-?, -1)
decreasing on (-1, ?)
C. increasing on (-1, ?)
decreasing on (-?, -1)
D. increasing on (2, ?)
decreasing on (-?, 2)
Answer: D
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