Which of the following most logically completes the argument?
It has been observed that in Britain a majority of the people admitted to elite universities have a last name beginning with a letter in the first half of the alphabet. Some have suggested that these data indicate a bias that could originate in the way admissions files are stored or possibly in school classroom seating arrangements; if those are alphabetically based. However, the observation actually provides no evidence for any alphabetic bias in university admissions, since _________.
some countries other than Britain show a similar pattern of distribution of university places according to where the last initials of applicants fall in the alphabet
a majority of the British population have last names beginning with a letter in the first half of the alphabet
only a very small fraction of the British population is ever admitted to one of the elite universities
although children in British school classrooms may at one time and in some schools have been seated alphabetically, it is unlikely that this practice survives
elite universities in Britain draw their admissions from a national, rather than a regional, pool of applicants
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