Hearthstone, inc, a home healthcare firm, has been using a single predetermined overtiead alocation rate with direct labor hours as the allocation base to allocate overhead costs, The direct labor rate is $300 per hour. Clients are billed at 170% of direct tabor cost Sof Acosta, the prosident of Hearthstone, decided to develop an ABC system to more acourately allocate the indirtet costs. She identifed two activities related to the fotal indirect costs - travel and information technology (IT) support. The other relevart details are given beiow: The precetermined overhead aliocation rate foc traves wil bo (Round your answer to the nearest cent.) A. $68.33 permie B. $142.00 per mile C. $80.00 per millo D. $3200 per mile