A student who does often part-time jobs with around $20 per hour wage, wish to determine the cost of his study at the University of GG using the opportunity cost concept. The university's average annual fee is around $15,000 and he needs to spend around 30 hours per week for 30 weeks in a year for his studies. Based on the given data, what is a rough estimation of the total cost of his study? Assume that he needs to pay the tuition fee at the beginning of the year from a loan. But the loan needs to be paid after 4 years with 6% annual interest rate in one payment. Also, assume the calculation is only for one year of study. The estimated amount is: [Select ]