The following information is available for a company's cost of sales over the last five months. Month Units sold Cost of sales January 470 $ 33,800 February 870 $ 40,500 March 1,950 $ 52,500 April 2,470 $ 64,500 Using the high-low method, the estimated total fixed cost is: Multiple Choice $26,586. $106,344. $53,172. $17,533. $30,700.