Which of the following is/are true about the following code? using System;struct A { public int x; public int y; public A(int x, int y) { this.x = x; this.y = y; } public override string ToString() { return ( + x + , + y + ); } } class Test { static void Main() { A a; A b = new A(); a.x = 2; a.y = 4; Console.WriteLine(a={0}, a); Console.WriteLine(b={0}, b); } }
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