Sasha: Handwriting analysis should be banned in court as evidence of a person' s character: handwriting analysts called as witnesses habitually exaggerate the reliability of their analyses. Gregory: You are right that the current use of handwriting analysis as evidence is problematic. But this problem exists only because there is no licensing board to set professional standards and thus deter irresponsible analysts from making exaggerated claims. When such a board is established, however, handwriting analysis by licensed practitioners will be a legitimate courtroom tool for character assessment. Gregory does which one of the following in responding to Sasha's argument? ['He defends a principle by restricting the class to which it is to be applied.', "He shows that Sasha's argument itself manifests the undesirable characteristic that it condemns.", "He identifies a self-contradictory statement in Sasha's argument.", 'He abstracts a general principle from specific evidence.']