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

static void Main(string[] args)
{
    float sum;
    int i;
    sum = 0.0F;
    for (i = 1; i <= 10; i++)
    {
        sum = sum + 1 /(float)i;
    }
    Console.WriteLine("sum =" +sum);
    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