The first time Barry brought his car to Auto Lube to have the oil changed he was very satisfied with the service. The service manager consulted him several times while his car was being serviced, asked him if there were any problems with the car, recommended when additional services should be performed and answered questions directly and politely. However, when Barry went back to Auto Lube after three months to have his oil changed again, he was not satisfied with the service. The manager spoke to him only when he arrived and when he paid his bill. In addition, the manager was impatient and unfriendly during the interaction. Barry's experience at Auto Lube illustrates the of services. Group of answer choices Simultaneous production and consumption