Which of the Following Was a Reform Instituted by the First

Which of the following was a reform instituted by the first Ming emperor to reduce court factionalism and the power of the scholar-gentry?

A) A chief minister was appointed from the royal family to oversee all work of the imperial bureaucracy.
B) Corrupt or incompetent members of the bureaucracy were punished by being beaten on the bare buttocks.
C) Imperial wives could only come from specified noble families of good repute.
D) Eunuchs were expelled from the royal household.