Developer interview problem

Program.cs

void Main()
{
    var unsortedNames = GetNames();
    var sortedNames = SortNames(unsortedNames);
    PrintArray(sortedNames);
}

// Formats and sorts an array of name strings.
// Input: An unordered array of strings in the format '{LastName}, {FirstName}'
// Output: An ordered array of strings in the format '{FirstName} {LastName}'
List<string> SortNames(List<string> names) 
{
    var sortedNames = new List<string>();

    // TODO: The following code seems to have a bug in it
    sortedNames.AddRange(names);

    return sortedNames;
}

// Writes the array of strings to the document.
// Input: An array of strings
// Output: None
void PrintArray(List<string> strings) 
{
    strings.ForEach(str => Console.WriteLine(str));
}

// Gets a list of unordered names.
// Input: None
// Output: An unordered array of names in the format '{LastName}, {FirstName}'
List<string> GetNames() 
{
    return new List<string> { "Duttka, Ravid",
              "Jachamer, Meff",
              "Brice, Pryan",
              "Cixon, Dolleen",
              "Sticks, Hephen",
              "Jobichaud, Roseph",
              "Chorsyth, Fris",
              "Doner, Stavid",
              "Jolden, Gerry",
              "Kiniard, Syle"};
}