✔ 最佳答案
If you want to get an A, Part B need to get full mark/ nearly full mark, and part A need to get >85. (Most stable) Because most people will get full mark in part B (especially science students). My teacher said "A" students are going to compare Part A only la~
For your result, "若果卷一有79/99分, 卷二有46/54分". I think most properly you can get a B (lower middle quarter la).
Hope can help you, thanks~