If the slope of one of the lines given by $ax^2 + 2hxy + by^2 = 0$ is $5$ times the other,then

  • A
    $5h^2 = ab$
  • B
    $5h^2 = 9ab$
  • C
    $9h^2 = 5ab$
  • D
    $h^2 = ab$

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