In City X, the range of the daily low temperatures during June 2012 was 20° Fahrenheit, and the range of the daily low temperatures during July 2012 was 25° Fahrenheit.
Quantity A:The range of the daily low temperatures in City X for the two-month period from
Quantity B:30° Fahrenheit June 1, 2012, through July 31, 2012
答案：D