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If {:(f(x),=log(1-3x)(1+3x),",",x != 0),...

If `{:(f(x),=log_(1-3x)(1+3x),",",x != 0),(,=k, ",",x = 0):}`
is continuous at x = 0, then the value of k is

A

`-1`

B

1

C

2

D

`-2`

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The correct Answer is:
A
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