Q1: Which of the following statement is correct about the program given below?

#include<iostream.h> 
static int b = 0; 
void DisplayData(int *x, int *y = &b)
{
    cout<< *x << ' ' << *y;
}
int main()
{
    int a = 10, b = 20 ;
    DisplayData(&a, &b);
    return 0; 
}