Law enforcement economy: It means that the government department has huge discretion when enforcing the law, and its jurisdiction has considerable economic benefits. Which of the following disputes are caused by "law enforcement economy":. ["Eight law enforcement officers of a city's industrial and commercial bureau and several law enforcement officers of the city's health and epidemic prevention station scuffled in front of a grocery store for a case of milk powder.", 'Xiao Li is unwilling to stop at the free parking lot designated by the traffic police and has a dispute with the traffic police.', "In a farmer's market, hawkers arbitrarily set up stalls and refused to accept the management to quarrel with the administrator.", 'The doorman of a residential area has strict management of vehicles entering and leaving the area, and often fines. Some owners are very dissatisfied and often quarrel with the doorman.']