Which of the following statements explains the meaning of a probability forecast that calls for a "40 percent chance of rain"?
A. There will be measureable rain on 40 percent of the forecast area.
B. There is a 40 percent chance that there will be measurable rain in the forecast area.
C. There will be measurable rain during 40 percent of the time over the forecast area.
D. There is a 40 percent chance that there will be no measurable rain at any random place within the forecast area.
Answer: B
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