The correct answer is B) force traders to stay in a separate city, away from the inland areas.
Qianlong did not force traders to stay in a separate city, away from the inland areas.
We re talking about the 6th Emperor of the Qing dynasty of China. Qianlong. His rule started in 1735 and ended in 1796. He became the ruler of China after the death of Emperor Yongzhen. With his military skills, one of the first things he did as Emperor was sent the Chinese troops to end the Miao riot.