A company that offers ski and snowboard lessons provided the following cost data. Month November 2014 December 2014 January 2015 February 2015 March 2015 Number of Total Costs Lessons Incurred 55 $15,400 45 $14,000 60 $18,000 50 $14,700 75 $19,000 Using the high-low method, the company's estimated fixed costs per month are closest to O a. $166.67 b. $170.00 C. $6,250 d. $6,100.00 O e. $5.000 f. $6,500.00 O g. $172.00