"If the Xiongnu is not destroyed, why should we take care of our family?" is Huo Qubing's famous saying. Emperor Wu of the Han Dynasty organized a powerful cavalry and launched a large-scale counterattack against the Huns, seizing the Hetao and Hexi Corridor areas. In 119 BC, Emperor Wu of the Han Dynasty sent generals Wei Qing and Huo Qubing to attack the Huns, and defeated them in Mobei, leaving the Huns unable to fight again. Confrontation with the Western Han Dynasty.

Therefore choose B.