Select the correct answer from each drop-down menu. the northville school board has proposed this budget for the upcoming school year: 20% for school staff’s salaries 50% for school maintenance and upkeep 10% to refurbish the gymnasium 5% to upgrade the computer lab hardware 10% for new instruments for the music department 5% for new sports equipment after a brief discussion, the school board revised the budget as follows: 20% for school staff’s salaries 50% for school maintenance and upkeep 10% to refurbish the gymnasium 10% to upgrade the computer lab hardware 5% for new instruments for the music department 5% for new sports equipment in this case, the opportunity cost for (refurbishing the gym, upgrading the computer lab, or getting new instruments.) was ( upgrading the new computer lab hardware, getting new equipment, or getting new instrument)