Which of the Following Did the Tuoba,founders of the Northern

Which of the following did the Tuoba,founders of the Northern Wei dynasty,pursue after taking control of part of the old Han territory?

A) They maintained many Chinese traditions of statecraft.
B) They refashioned the Chinese military traditions to emphasize the military practices of the nomadic tribes.
C) They abolished the practice of forced labor for large public projects.
D) They worked to systematically destroy all evidence of previous dynasties,especially the Han.