A full time student used to earn 30000 in his previous job but now attend a 4 year collage, He paid a total of 15000 in tuition and fees per year. He also took a student loan of 10000 at a annual interest rate of 3% per year and withdrew 14000 in saving that earned 5% in interests. His total cost of attending school in a year is about a: 43000 b:44000 c:45000 d:46000