Read this and answer the question. If the question is unanswerable, say "unanswerable".

In the fall of 2014, among the six undergraduate schools, 40.6% of undergraduate students are enrolled in the Weinberg College of Arts and Sciences, 21.3% in the McCormick School of Engineering and Applied Science, 14.3% in the School of Communication, 11.7% in the Medill School of Journalism, 5.7% in the Bienen School of Music, and 6.4% in the School of Education and Social Policy. The five most commonly awarded undergraduate degrees are in economics, journalism, communication studies, psychology, and political science. While professional students are affiliated with their respective schools, the School of Professional Studies offers master's and bachelor's degree, and certificate programs tailored to the professional studies. With 2,446 students enrolled in science, engineering, and health fields, the largest graduate programs by enrollment include chemistry, integrated biology, material sciences, electrical and computer engineering, neuroscience, and economics. The Kellogg School of Management's MBA, the School of Law's JD, and the Feinberg School of Medicine's MD are the three largest professional degree programs by enrollment.

In the fall of 2012, which school did 40.6% of undergraduates enroll in?
unanswerable