Option B, a high-pressure system, is the right answer.
A center where the pressure of the air is the highest compared to its surrounding is called a high-pressure center. Subsiding wind is dry and cold and increases climatic pressure creating a high-pressure area. Subsidence frequently generates high barometric stress as more wind passes into the corresponding area: the frozen highs are regions of relatively steady subsidence, as are the tripod ranges, and the regions of subsidence are the reservoirs of most of the prevailing winds of the earth.
