In an attempt to reduce the use of gasoline, a city imposed a $2.50 per gallon tax on gasoline in 2010. A researcher working for the city located data on annual gallons used for the five years leading up to the gas tax (to provide a baseline) and for the five years after the start of the gasoline tax (to show the consumption pattern after the tax). Which of the following best describes this study design? Group of answer choices A-B-A-B design changing-criterion design interrupted time-series design regression-discontinuity design