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If the term independent of `x` in the `(sqrt(x)-k/(x^2))^(10)` is 405, then `k` equals `2,-2` b. `3,-3` c. `4,-4` d. `1,-1`

A

2, -2

B

3, -3

C

4, -4

D

1, -1

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The correct Answer is:
B
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