What will be the output of the following Java code?

class static_out 
{
    static int x;
static int y;
    void add(int a, int b)
    {
        x = a + b;
        y = x + b;
    }
}    
public class static_use 
{
    public static void main(String args[])
    {
        static_out obj1 = new static_out();
        static_out obj2 = new static_out();   
        int a = 2;
        obj1.add(a, a + 1);
        obj2.add(5, a);
        System.out.println(obj1.x + " " + obj2.y);     
    }
}

A. 7 7.4

B. 6 6.4

C. 7 9

D. 9 7

Answer: Option C