`int(e^(tan^-1x))/(1+x^2)dx` =

A

(A) `log(1+ x^2) + c`

B

(B) `log e^(tan^-1x)+c`

C

(C) `e^(tan^-1x)+c`

D

(D) `tan^-1e^(tan^-1x)+c`

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