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If f(x)=sin(sqrt([a])x) (where [.] denot...

If `f(x)=sin(sqrt([a])x)` (where [.] denotes the greatest integer function) has `pi` as its fundamental period, then

A

a=1

B

`ain{1,2}`

C

`a=9`

D

`ain{4,5}`

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The correct Answer is:
D
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