GMAT Critical Reasoning (CR) | Differences in clothing can serve to highlight socioeconomic

Differences in clothing can serve to highlight socioeconomic differences. When a school requires students to wear uniforms in school, all students in that school are clothed in exactly the same way. Therefore, by requiring students to wear uniforms, schools are reducing the degree to which the clothing that students wear in school reflects socioeconomic differences.

Which of the following, if true, most undermines the above conclusion?

A. Students who wear uniforms to school can express their
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