A statistical review of word types and frequencies in all of the novels in a library has found that the novels published prior to 1970 use far fewer slang words, measured as a percentage of the book's total words, than the novels published in 1970 or later. Evidently, whether or not they intended to do so, authors of novels published prior to 1970 used less slang than authors of later books.
Which of the following, if true, most seriously weakens this argument?
【选项】
Aspiring novelists prior to 1970 used as much slang as later authors, but more conservative attitudes of editors during the earlier period made writers who used slang in that period less likely to be published.
选项是否正确？