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If function defined by : f(x)= {((sin3x)...

If function defined by : `f(x)= {((sin3x)/(2x),,x,ne,0),(k+1,,x,=,0):}` is continuous at x = 0, then value of k is :

A

0

B

`3/2`

C

`1/2`

D

1

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