Linear Programming - A student has 30 minutes to complete an exam. There are 9 multiple choice questions worth 3 points each. There are also 3 short answer questions worth 5 points each. It takes about 2 minutes to answer a multiple choice question and about 6 minutes to complete a short answer question. How many multiple choice questions and short answer questions should the student answer to maximize his score in the time remaining (Use x = multiple choice; y = short answer.)

State the Objective Function (S for score) in the linear programming problem given

A. S = 3x + 5y
B. S = 5x + 3y
C. S = 2x + 6y
D. S = 6y + 2x