Doctor: The practice of using this therapy to treat the illness cannot be adequately supported by the claim that any therapy for treating the illness is more effective than no therapy at all. What must also be taken into account is that this therapy is expensive and complicated. Which one of the following most accurately expresses the main point of the doctor's argument? ['The therapy is more effective than other forms of treatment for the illness.', "The therapy's possible effectiveness in treating the illness is not sufficient justification for using it.", 'The therapy is more expensive and complicated than other forms of treatment for the illness.', 'The therapy should not be used to treat the illness unless it is either effective or inexpensive.']