Which of the following is the correct output for the C#.NET program given below?

int i = 20 ;
for( ; ; )
{
    Console.Write(i + " "); 
    if (i >= -10)
        i -= 4; 
    else 
        break;
}

1. int a;
   String res; 
   if (a % 2 == 0)
       res = "Even"; 
   else 
       res = "Odd";

2. int a; 
   String res; 
   if (a Mod 2 == 0) 
       res = "Even"; 
   else
       res = "Odd";

3. int a;
   Console.WriteLine(a Mod 2 == 0? "Even": "Odd");

4. int a; 
   String res;
   a % 2 == 0? res = "Even" : res = "Odd";
   Console.WriteLine(res);

int a = 10, b = 20, c = 30; 
int res = a < b? a < c? c : a : b; 
Console.WriteLine(res);

int i = 0, j = 0; 

label:
    i++;
    j+=i;
if (i < 10)
{
    Console.Write(i +" ");
    goto label; 
}