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

static void Main(string[] args)
{
    String a ="i love iostream";
    Console.WriteLine(a.IndexOf('i') + " " + a.IndexOf('e') + " " + a.LastIndexOf('i') + " " + a.LastIndexOf('e'));
    Console.ReadLine();
}

A. TextReader B. FileReader C. FileWriter D. StreamReader

A. To read data from files B. To write data to files C. To ensure proper disposal of resources D. To handle exceptions

A. Write() B. WriteLine() C. WriteText() D. Append()

A. FileStream file = new FileStream("filename.txt", FileMode.Write); B. StreamWriter file = new StreamWriter("filename.txt"); C. File.OpenWrite("filename.txt"); D. None of the above