question_answer

Let \[f:R\to R\] be any function.  Define \[g:R\to R\]by \[g(x)=\,|f(x)|\] for all x. Then g is

A)  onto if f is onto

B)  one-one if f is one-one

C)  continuous if f is continuous

D)  differentiable if f is differentiable.

E)  None of these