Table 1 FleetFoot's Shoe Manufacturing Costs (5 in millions) M Sales Labor Costs Raw Materials Advertising Research & Development Other General & Administrative Depreciation & Amortization Total Costs Pretax Profits Pretax Margin Plant & Equipment Cost $100 Straight-line Depreciation, Useful life 20 years Select all of the expenses from the table above that constitute FleetFoot's xed costs. Labor Costs Raw Materials Advertising Research & Development Other General & Administrative Depreciation & Amortization