What happens to the air and when that causes high-pressure systems?

A warm air cools as it rises in the wind blows inward
B Cooler warms as it rises in the wind blows inward
C Cooler warm as it sinks, and the wind blows out
D Warm air as it sinks, the wind blows outward

A. Warm air cools as it rises and the wind blows inward. This causes high-pressure systems.