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If f(x)=a|sinx|+be^|x|+c|x|^3 and if f(x...

If `f(x)=a|sinx|+be^|x|+c|x|^3` and if `f(x)` is differentiable at `x=0` then

A

p = q = r = 0

B

`p=0, q=0, r in R`

C

`q=0, r=0, p in R`

D

`p+q=0, r in R`

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