$\int {\frac{{1 + {{\cos }^2}x}}{{{{\sin }^2}x}}} \,dx = $

  • A
    $ - \cot x - 2x + c$
  • B
    $ - 2\cot x - 2x + c$
  • C
    $ - 2\cot x - x + c$
  • D
    $ - 2\cot x + x + c$

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