String.Equals vs String.Compare vs “==” in Action. Explanation needed

Question

Following is the code snippet from a console application -

class MyClass
{        
   public int GetDay(string data22)
    {
        int returnValue = 0;

              


        

Answer 1

The ExecutionDay string contains invisible characters, otherwise all checks would be true

The following lines return a different length, 9 and 8 respectively

        Console.WriteLine(ExecutionDay.Length);
        Console.WriteLine("THURSDAY".Length);