The correct option is C: Qi
Zheng ascended the throne in 247 a. C., with twelve and a half of age, and was king under a regent until 238 a. C. when at the age of one and a half years he planned a coup in the palace and took all the power. He continued the tradition of attacking tenaciously and defending the feudal states, and finally taking control of all of China in 221 a. C., defeating the last independent Chinese state, the Qi State.
