If f(x)=" min "{(sqrt(9-x^(2)), sqrt(1+x...

If `f(x)=" min "{(sqrt(9-x^(2)), sqrt(1+x^(2)))}, AA, x in [-3, 3]`
then the number of point(s) where `f(x)` is non - differentiable is/are

A

4

B

3

C

2

D

0

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The correct Answer is:

A

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