Suppose $f$ is differentiable for all $x$. If $f(1) = -2$ and $f'(x) \geq 2$ for all $x \in [1, 6]$,then:

  • A
    $f(6) \geq 8$
  • B
    $f(6) < 8$
  • C
    $f(6) < 5$
  • D
    $f(6) = 5$

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