The Apollo Delivery Service has the following information about its truck fleet miles and operating costs: Year Miles Operating Costs 2011 250,000 $160,000 2012 300,000 $175,000 2013 350,000 $210,000 What is the best estimate of fixed costs for fleet operating expenses in 2014 using the high-low method? $100,000 $ 35,000 $175,000 $ 50,000