The box plots summarize the daily temperatures, in degrees Celsius, for two cities in July. Based on the box plots, which of the following statements must be true?
The median temperature in City X is greater than the median temperature in City Y.
The range of temperatures in City X is less than the range of temperatures in City Y.
The interquartile range of temperatures in City X is greater than the interquartile range in City Y.
The first quartile of temperatures in City X is greater than the first quartile in City Y.