Select the correct answer.
A high school surveyed students to determine if new foreign language classes should be added to the course offerings for the next school year. The two-way frequency table below shows the interest of next year's underclassmen in the new courses.
German Mandarin Neither Total
Freshmen 30 80 230 340
Sophomores 15 65 200 280
Total 45 145 430 620
Approximately what percentage of the underclassmen have an interest in taking a Mandarin course next year?
44.83%
33.72%
23.39%
55.17%