"A" "B" "C" "D" 8.6 5.9 6.7 8.2 8.8 6.2 9.0 7.4 7.9 6.6 8.4 8.4 6.4 6.6 8.6 6.9 6.8 7.4 6.9 7.5 8.1 6.3 7.2 7.5