Given the following cost and activity observations for Wondrous Company's utilities, use the high-low method to calculate Wondrous' variable utilities costs per machine hour. Select the correct answer. Cost Machine Hours March $3,084 14,766 April $2,663 9,823 May $2,839 12,402 June $3,835 17,620 $0.22 $0.15 $0.23 $0.03