$\sqrt{3} \csc 20^\circ - \sec 20^\circ = $

  • A
    $2$
  • B
    $\frac{2 \sin 20^\circ}{\sin 40^\circ}$
  • C
    $4$
  • D
    $\frac{4 \sin 20^\circ}{\sin 40^\circ}$

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