Which one will be the correct option ...

Which one will be the correct option
`int(e^(cot^(-1)x))/(1+x^(2))(x^(2)-x+1)dx=` . . . . `+c`

A

`x*e^(cot^(-1)x)`

B

`e^(cot^(-1)x)`

C

`(e^(cot^(-1)x))/(1+x^(2))`

D

`-e^(cot^(-1)x)`

Verified by Experts

The correct Answer is:

A

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