9. is the benefit(s) given up when when one decide on an option over another. O A. Sunk costs B. Opportunity costs C. Avoidable costs O D. Differential costs 10. Predetermined overhead rate is calculated using this formula A. total actual overhead divide by total actual activities B. total activities divide by actual overhead C. total budgeted overhead divide by total budgeted activities D. total budgeted activities divide by total budgeted overhead