Tallequah, Inc. uses the high-low method to analyze cost behavior. The company observed that at 28,000 machine hours of activity, total maintenance costs averaged $11.00 per hour. When activity jumped to 32,000 machine hours, which was still within the relevant range, the average total cost per machine hour was $10.50. On the basis of this information, the company's fixed maintenance costs were: Multiple Choice $32,000. $112,000. $308,000. $336,000. None of the answers is correct