The figure shown below is the graph of the derivative of some function $y=f(x)$. Then,

  • A
    $f$ has local minima at $x=a, b$ and a local maximum at $x=c$
  • B
    $f$ has local minima at $x=b, c$ and a local maximum at $x=a$
  • C
    $f$ has local minima at $x=a, c$ and a local maximum at $x=b$
  • D
    the given figure is insufficient to conclude anything about the local minima and local maxima of $f$

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