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Let f(x) be defined in [-2,2] by f(x) = ...

Let f(x) be defined in [-2,2] by `f(x) = { max(sqrt4-x^2),sqrt(1+x^2)), -2leqxleq0; min(sqrt(4-x^2),sqrt(1+x^2),0ltxleq2`, then f(x)

A

is continuous at all points

B

is not continuous at more than one point

C

is not differentiable only at one point

D

is not differentiable at more than one point

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