Emperor Wudi served as emperor of the Han Dynasty in China from 141 B.C. until 87 B.C. He changed the way people were appointed to government jobs by
A.
using a lottery system to decide who would be placed into jobs.
B.
only allowing his family members to work in the government.
C.
requiring people to pass written tests before they earned a position.
D.
assigning jobs to those who had paid him the most money.