When did the British return Hong kong to china?

When did the British return Hong kong to china?

A. 2000
B. 1997
C. 1999
D. 1980

At midnight on June 30/July 1, 1997, the crown colony of Hong Kong (See Map ) officially reverted to Chinese sovereignty, ending 156 years of British rule. After a formal handover ceremony on July 1, the colony became the Hong Kong special administrative region (HKSAR) of the People’s Republic of China.