If the minimum value of the quadratic expression $x^2+5x-2$ is $M$ and it occurs at $x=a$,then $\frac{M}{a}$ is equal to

  • A
    $3.3$
  • B
    $\frac{33}{5}$
  • C
    $2.5$
  • D
    $-0.25$

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