Melinda's Custom Homes, a construction company that builds custom-designed houses, incurred costs for the following items. The cost object is the houses built by the company. Indicate whether they are direct or indirect, and whether they are variable or fixed. Wages paid to construction crew Wood Production supervisor's salary Billboard advertising for the company Rent on office space Depreciation on tools used at construction sites Sheet rock Machine purchased to cut a special kind of ble requested by one customer-cannot be re-used Gas for the company truck, used to haul supplies to construction sites Paint Fees paid to electrical contractor (a fixed amount per house) Depreciation on the company truck, used to haul supplies to construction sites (straight-line) Insurance premiums President's salary Bricks Direct or Indirect Variable or Fixed