Given the following cost and activity observations for Bounty Company's utilities, use the high-low method to determine Bounty's variable utilities cost per machine hour. Round your answer to the nearest cent. Cost Machine Hours March $3,136 April 2,627 May 2,861 June 3,610 14,682 9,935 11,804 18,296 Oa. $0.82 Ob. $0.12 Oc. $0.78 Od. $1.41