By Instituting Civil Service Examinations for Entrance into the Government

By instituting civil service examinations for entrance into the government bureaucracy, the Song

A) ensured that only the wealthy elite would retain positions of power.
B) recruited the most talented men for government service.
C) tried to limit the number of civil servants.
D) drove the most talented people out of the country.
E) severely limited its ability to get competent civil servants.