What will be the output of the following Java program?

class Output 
{
    public static void main(String args[]) 
    {    
         int a = 1;
         int b = 2;
         int c;
         int d;
         c = ++b;
         d = a++;
         c++;
         b++;
         ++a;
         System.out.println(a + " " + b + " " + c);
    } 
}

A. 3 2 4

B. 3 2 3

C. 2 3 4

D. 3 4 4

Answer: Option D