Grading of Midterm Exam

There are 25 questions, and each is worth 4 points. If a question is divided into two sub-questions, then each sub-question is worth 2 points.

Each multiple choice question (select one or more answer choices) is worth 4 points, and each question has four choices. You get -2 points whenever your choice is different from the correct answer, until the score of this question reaches 0. For example, suppose the correct answer is BE. If your answer is B, you get 2 points. If your answer is BC, you get 0 points.