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int (0)^(2) x ^(3) [1+ cos ""(pix)/(2)] ...

`int _(0)^(2) x ^(3) [1+ cos ""(pix)/(2)] dx` is (where `[**]` denotes the greatest integer function)

A

`1/2`

B

`1/4`

C

0

D

None of these

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The correct Answer is:
B
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