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Based on the chart provided, which of the following statements must be true?
(Indicate all that apply.)
A. The number of students who majored in Psychology in 2017 was less than the number of students who majored in Psychology in 2015.
B. The number of students who majored in Mathematics in 2017 was more than 17% greater than the number of students who majored in Mathematics in 2015.
C. In 2017, more students majored in Mathematics than in any of the other majors in the chart.