Weather controlled by anticyclone

A, anticyclone can be formed by cold, warm and high pressure, so the temperature may rise or fall, so it doesn't matter.

B, anticyclone can be formed by cold and warm high pressure, so the temperature may rise or fall, so it doesn't matter.

C, the air sinks in the vertical direction, which can realize air drying, so it is correct.

D, the wind direction is determined by the relative position of Shanghai anticyclone, so it is irrelevant.

So choose: C.