Angle of projection for which the range equals the maximum height

1. A.
   $\frac{1}{4}$
2. B.
   $\frac{1}{2}$
3. C.
   2
4. D.
   4

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1. A.
   $\tan^{- 1}(2)$
2. B.
   $\tan^{- 1}(4)$
3. C.
   $\tan^{- 1}\left( \frac{1}{4} \right)$
4. D.
   $\tan^{- 1}\left( \frac{1}{2} \right)$

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