The Central Meteorological Observatory issued a weather forecast for the next three days at 06:00 on November 17, 2008: Affected by the cold air moving eastward and southward, in the next three days, the temperature in Shandong Peninsula and other places will be

A. It can be seen from the symbol that it is frost;

B. It can be seen from the symbol that it is cloudy;

C. It can be seen from the symbol that it is heavy rain;

D. It can be seen from the symbol that it is a typhoon and its center. Frost has the greatest impact on agricultural production in Laizhou City.

So choose: A.