Which of the following will be the correct output for the C#.NET pr

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

namespace ConsoleApplication {
   struct Sample {
     public int i; 
   }; 
   class MyProgram {      
     static void Main() { 
       Sample x = new Sample();
       x.i = 10;
       fun(x); 
       Console.Write(x.i + " "); 
     }    
     static void fun(Sample y) {   
       y.i = 20;        
       Console.Write(y.i + " "); 
     }  
   };
 }

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