In August, the Desert City of Rojo Saw Greater Rainfall

Multiple Choice

In August, the desert city of Rojo saw greater rainfall than in any other August on record. However, by September, city officials became alarmed that the city's water supply was critically low, prompting the city to issue water restrictions for all residents.
Which one of the following, if true, helps explain why the city's water supply was so low even after August's rainfall?

A) Rojo residents have always been careful about their use of water due to their location in the desert.
B) The heavy rains in August prompted residents to use more water than they had in previous years.
C) The city had instituted a more moderate quota on water usage in February.
D) People had less need to water their lawns than is normally the case because of the heavy rains in August
E) August is a popular time for Rojo residents to take a vacation, and the city's population actually decreased temporarily.