ASTQB Exam CTAL Topic 1 Question 16 Discussion

A College Enrollment application used by ABC College calculates the amount each student has to pay for gym and computer lab usage. The application asks for Student ID, Name and Student's major. Then the application calculates the fee. If student's major is Computer Science, they have to pay the full computer lab fee. If the student's major is not Computer Science, they have to pay only 1/3 rd of the computer lab fee. All students have to pay for the gym membership. How many tests are required for path coverage of the above application?