If the orthocentre and circumcentre of a triangle $ABC$ are at equal distances from the side $BC$ and lie on the same side of $BC$,then the value of $\tan B \tan C$ is equal to:

  • A
    $3$
  • B
    $\frac{1}{3}$
  • C
    $-3$
  • D
    $-\frac{1}{3}$

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