If tan theta +cot theta =(4)/(sqrt(3)), ...

If `tan theta +cot theta =(4)/(sqrt(3))`, where `0 lt theta lt (pi)/(2)`, then `sin theta +cos theta ` is equal to

A

1

B

`(sqrt(3)-1)/(2)`

C

`(sqrt(3)+1)/(2)`

D

`sqrt(2)`

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