Given the following C# code:

class A $\{$

int x $=0$;

void f$()\{$

$//$do something

x $=1$;

$//$do something else

float x $=10\mathrm{.}0$;

$...$

$\}$

$\}$

a$.$ Please specify the scope of variable float x$.(3$ points$)$Given the following C$++$ function, please specify the scope and lifetime of the static local variable x$.$

$(4$ points$)$

void f$()\{$

$//$do something

static int x $=0$;

$//$do something

$\}$