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Which is the correct method to convert given string in uppercase?

56. Which is the correct method to convert given string in uppercase?

1. Upper()
2. ToUpper()
3. Upr()
4. ToUpr()

Answer: B) ToUpper()

Explanation:

The ToUpper() method is used to convert the given string into the uppercase.

Example:

using System;

class Program {
  public static void Main() {
    string str = "includehelp";
    Console.WriteLine(str.ToUpper());
  }
}