A C# method that will return the Acronym of input using LINQ

GetAcronym.cs

public string GetAcronym(string input)
{
        string acronym = string.Join(string.Empty, input.Split(new[] {' '}, StringSplitOptions.RemoveEmptyEntries).Select(s => s[0].ToString(CultureInfo.InvariantCulture)).ToArray());
	return acronym 
}