Select the correct answer. The grades in a university are calculated as follows: 30% from class assignments, 35% from the final exam, and 35% from the field project. If Jay scores 75 out of 100 in class assignments, 65 out of 100 in the final exam, and 72 out of 100 in the field project, what is his average score? A. 68.40% B. 70.45% C. 70.66% D. 74.20% E. 74.84%