Springfield's city council wants to minimize the city's average yearly expenditures on its parking meters and so is considering replacing the coin-operated meters currently in use with roadside kiosks at which parking slips can be purchased via credit card. Since many of the coin-operated meters require replacement, the costs associated with the conversion to credit card kiosks would be minimal.
Which of the following would it be most useful to know in determining whether switching to roadside kiosks would be likely to help minimize Springfield's yearly maintenance costs?
【选项】
Whether any cities have switched from coin-operated meters in their parking meters to new devices other than roadside kiosks
选项是否正确？