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underset(x to 0)"Lt" ((1-cos 2x)(3+cos x...

`underset(x to 0)"Lt" ((1-cos 2x)(3+cos x))/(x tan 4x ))` is equal to

A

`(-1)/(4)`

B

`(1)/(2)`

C

1

D

2

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The correct Answer is:
D
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