The Qin Dynasty Used Which of the Following Techniques to Consolidate

The Qin dynasty used which of the following techniques to consolidate state power?

A) It abandoned territory in the south and northeast of China to concentrate on its remaining land.
B) It promoted as the guiding political idea the notion of "greater flexibility," which allowed individual regions to establish customs suited to their own traditions.
C) It established strict laws and harsh punishments that applied to everyone regardless of rank or status.
D) It embraced the ideas of Confucianism such as emphasizing rituals and ethics to create order within society.