Q$2)$ How many time the default constructor was called in this code when its executed?

$```$

class A$\{$

public: int x$=3$;

A$()\{$cout$$"called

$"$;$\}$

$\}$xa;~

int main$()\{$

A$()$;

A xb;

$\}$

a$)1$

$```$

b$)2$

c$)3$

other