In his book, published in 1892, Grey used the same metaphor that Jordan used in her book, which was published in 1885. The metaphor is so unusual that there is little chance that two different people independently created it. Ttherefore, it is highly likely that Grey read Jordan' s book. Which one of the following, if true, most weakens the argument? ["Both Grey's book and Jordan's book were written for the same audience.", 'According to most scholars, Grey was generally a more inventive writer than Jordan and developed many original metaphors.', 'Jordan used the same metaphor in a work that she wrote in 1894 and published in 1895.', 'A text that was probably known to both Jordan and Grey was published in 1860 and also contained the same unusual metaphor.']