If $$f(x) = a|\sin x| + b e^{|x|} + c|x|^3$$, where $$a, b, c \in R$$, is differentiable at $$x = 0$$, then

A

$$a = 0, b$$ and $$c$$ are any real numbers

B

$$c = 0, a = 0, b$$ is any real number

C

$$b = 0, c = 0, a$$ is any real number

D

$$a = 0, b = 0, c$$ is any real number