The current Quiz Generator just does 4 functions (addition, subtraction, division, multiplication). However, Dr. Lee wants to expand more topics on the Quiz Generator in future. The current generator using UI to separate topics, so it is hard for Dr. Lee to expand more topics in the future because he has to edit the code to expand topics. To help Dr. Lee easier to expand topics, we come up with a new idea. We will rebuild a structure to avoid using UI to control topics, and the Quiz should be multiple choice. We will discuss with Dr. Lee next week about this idea to get his approvement.