ABC Solutions provides marketing services on an hourly rate. They are currently charging $34/hour to their clients. The CEO makes $92,000 a year before bonuses. Each marketing manager works about 50 hours per week. They estimate that their promotional cost are $5/hour, admin expenses are $9/hour, sales costs of $13/hour, and miscellaneous costs of $1/hour. What is their contribution margin? O A. $19 OB. $34 O C. $6 OD. $7 O E $28