Consider the following code block:

Program()

{

int x = 5;

int y = 3;

Sub1(y,x,x);

print x, y;

}

Sub1(int &a, int &b, int &c)

{

b = b+4;

c = a+b+c;

}

Suppose that parameters are passed by reference to the subprogram, what is printed by the print statement in the program?