The local DMV processes applications for driver’s license renewals with the following three steps. First, the customer registers with the receptionist, who updates the customer’s information in the database. This first step takes 2 minutes per customer. Then, the customer visits one of two cashiers to pay the associated fees for the license renewal. This takes 8 minutes per customer. Finally, the customer visits one of three license processing stations where the customer’s picture is taken and the license is printed. This final step takes 15 minutes per customer. Assume demand is 20 customers per hour.   When the DMV opens in the morning, about how long will it take to process the first 50 customers? (Show your work)   A. 3.6 hours   B. 3 hours   C. 2.8 hours   D. 1.9 hours

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