Given the following cost and activity observations for Smithson Company's utilities, use the high-low method to calculate Smithson's fixed costs per month. Round your final answer to the nearest dollar. Do not round interim calculations.

	Cost	Machine Hours
January	$27,000	10,200
February	35,600	17,700
March	28,900	11,700
April	30,000	14,500

a.$48,973

b.$12,243

c.$26,017

d.$15,304