What will be the output of the following C# code conversion?

static void Main(string[] args)
{
    char a = 'A';
    string b = "a";
    Console.WriteLine(Convert.ToInt32(a));
    Console.WriteLine(Convert.ToInt32(Convert.ToChar(b)));
    Console.ReadLine();
}

A. int B. string C. double D. character

A. ; B. : C. . D. ,

A. num = int; B. var num; C. num int; D. int num;

A. Declares a constant B. Converts a variable to string C. Implicitly declares a variable D. Defines a method