Sunland Horticulture provides and maintains live plants in office buildings. The company's 914 customers are charged $38 per month for this service, which includes weekly watering visits. The variable cost to service a customer's location is $17 per month. The company incurs $2,468 each month to maintain its fleet of four service vans and $3,284 each month in salaries. Sunland pays a bookkeeping service $2 per customer each month to handle all invoicing and accounting functions. (a) Your answer is correct.