A+ 99.5-100 A 93.4-99.4A- 92.5-93.4B+ 91.5-92.4B 86.5-91.4B- 85.5-86.4C+ 84.5-85.4C 78.5- 84.4C- 77.5-78.4D+ 76.5-77.4D 70.5-76.4D- 69.5-70.4F 69.4