Noel has just graduated from medical college and he has been offered a job at one of the most prestigious hospitals in town. The job would pay him $45, 000 a year. However, his uncle, who runs a health care and fitness center, has also offered him a position for $35, 000 a year. However, Noel wishes to enroll for a medical research program at a foreign university, which would cost him $38, 000, and eventually does so. Calculate his opportunity cost