Consider the following information for Optimist Inc.: Production (units) Total Cost October 1,000 $42,000 November 55,000 December 46,000 2,000 1,500 2,500 1,800 67,500 January February 50,000 Calculate the variable cost per unit using the high-low method of cost estimation. O a. $25 O b. $35 O c. $17 O d. $42