Antioch Extraction, which mines ore in Montana, uses a calendar year for both financial-reporting and tax purposes. The following selected costs were incurred in December, the low point of activity, when 1,900 tons of ore were extracted: Straight-line depreciation $ 47,000 Charitable contributions* 14,000 Mining labor/fringe benefits 427,500 Royalties 109,000 Trucking and hauling 417,875 *Incurred only in December. Peak activity of 3,200 tons occurred in June, resulting in mining labor/fringe benefit costs of $720,000, royalties of $148,000, and trucking and hauling outlays of $542,875. The trucking and hauling outlays exhibit the following behavior: Less than 1,900 tons $ 355,375 From 1,9002,399 tons 417,875 From 2,4002,899 tons 480,375 From 2,9003,399 tons 542,875 Antioch uses the high-low method to analyze costs. Required: 1. Classify the five costs listed in terms of their behavior: variable, step-variable, committed fixed, discretionary fixed, step-fixed, or semivariable. 2. Calculate the total cost for next February when 2,200 tons are expected to be extracted. 3-a. Is hauling 1,900 tons with respect to Antiochs trucking/hauling cost behavior cost-effective? 3-b. If the company plans to extract 1,900 tons, at what number of tons can cost-effectiveness be achieved? 4. Distinguish between committed and discretionary fixed costs. If Antioch were to experience severe economic difficulties, which of the two types of fixed costs should management try to cut? 5. Speculate as to why the companys charitable contribution cost arises only in December