String or StringBuilder return values?

Question

If I am building a string using a StringBuilder object in a method, would it make sense to:

Return the StringBuilder object, and let the calling code call ToString()?

Answer 1

I would say the method should return sb.ToString(). If the logic surrounding the creation of the StringBuilder() object should change in the future it makes sense to me that it be changed in the method not in each scenario which calls the method and then goes on to do something else