Mathematics · Data Interpretation

A school's Class V has 4 sections. The result details are as follows: Section A: 12 failed both, 13 failed half-yearly only, 15 failed annual only, 20 passed both. Section B: 15 failed both, 15 failed half-yearly only, 18 failed annual only, 22 passed both. Section C: 18 failed both, 12 failed half-yearly only, 22 failed annual only, 18 passed both. Section D: 10 failed both, 15 failed half-yearly only, 14 failed annual only, 21 passed both. Which section has the highest percentage of students who failed in both exams relative to their total section strength?