What will be the output of the following C# code?
static void Main(string[] args)
{
int a = 5;
fun1 (ref a);
Console.WriteLine(a);
Console.ReadLine();
}
static void fun1(ref int a)
{
a = a * a;
}
static void Main(string[] args)
{
int a = 5;
fun1 (ref a);
Console.WriteLine(a);
Console.ReadLine();
}
static void fun1(ref int a)
{
a = a * a;
}A. 5
B. 0
C. 20
D. 25
Answer: Option D
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