Suppose the Following Code Is Embedded in an Otherwise Correct $\quad$

Suppose the following code is embedded in an otherwise correct and complete program.Answer below the question about what version of f()is called in g().
void f();//global
namespace A
{
$\quad$ void g()
$\quad$ {
$\quad$$\quad$ f();//Does this call A::f()? Or the global f()?
$\quad$ }
$\quad$ void f();
}
a)The call is to the global f();
b)The call is to the namespace A version of f(),i.e. ,A::f();
c)There is an error.There is a conflict between the namespace f()and the global f(),so there is no call made at all
d)There are other errors that prevent the code from running.