The dot plots below display the distribution of daily high temperatures (in degrees Celsius) for two cities, City P and City Q, over a 20-day period. City P's temperatures ranged from 1 to 7 degrees Celsius, and City Q's temperatures ranged from 14 to 20 degrees Celsius. The frequency distribution for both cities is identical in shape, as shown in the image. Which statement best compares the standard deviations of the daily high temperatures for these two cities?

The standard deviation of City P's temperatures is less than the standard deviation of City Q's temperatures.
The standard deviation of City P's temperatures is equal to the standard deviation of City Q's temperatures.
The standard deviation of City P's temperatures is greater than the standard deviation of City Q's temperatures.
There is not enough information to compare these standard deviations.