Which of the following was a condition of the treaty of Nanjing?

Treaty of Nanjing, (August 29, 1842) treaty that ended the first Opium War, the first of the unequal treaties between China and foreign imperialist powers. China paid the British an indemnity, ceded the territory of Hong Kong, and agreed to establish a "fair and reasonable" tariff.

China was forced to give up the island of Hong Kong to Great Britain