Tax reformer: The proposed tax reform legislation is being criticized by political groups on the right for being too specific and by political groups on the left for being too vague. Since one and the same statement cannot be both too specific and too vague, the criticisms just go to show that the legislation is framed just as it should be. Which one of the following is an assumption on which the argument depends? ['The proposed legislation has not been criticized by any group that does not identify itself with the political right or the political left.', 'It is rare for political groups both on the right and on the left to criticize a particular tax reform proposal.', 'The proposed legislation is not made up of a set of statements some of which are overly specific and some of which are overly vague.', 'The proposed legislation as it is framed was not meant to satisfy either political groups on the right or political groups on the left.']