单选题As a cold front passes an observer，pressure（）.Adrops and winds become variableBrises and winds become gustyCdrops and winds become gustyDrises and winds become variable
单选题
As a cold front passes an observer，pressure（）.
A
drops and winds become variable
B
rises and winds become gusty
C
drops and winds become gusty
D
rises and winds become variable
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