If the function f(x)={{:((x^(2)-1)/(x-1)...

If the function `f(x)={{:((x^(2)-1)/(x-1), "When ", x ne1),(k, "When" , x=1):}` is given to be continuous
at `x=1`, then the value of `k` is ____.

A

(a) `-1`

B

(b) `2`

C

(c) `-3`

D

(d) `-2`

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The correct Answer is:

B

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