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If f(x) is continuous at x=0, where f(x...

If `f(x)` is continuous at `x=0`, where `f(x)={:{(log_((1-2x))(1+2x)", for " x!=0),(k", for " x=0):}`, then `k=`

A

1

B

-1

C

2

D

-2

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B
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