Triple

Target entity: Sino-Vietnamese War
Context triple: [Battle of Cao Bằng, conflict, Sino-Vietnamese War]

• A. Sino-Vietnamese War chosen
  The Sino-Vietnamese War was a brief but intense 1979 border conflict in which China launched a punitive invasion of northern Vietnam, leading to heavy casualties and lasting regional tensions.
• B. Cambodian–Vietnamese War
  The Cambodian–Vietnamese War was a late-1970s conflict in which Vietnam invaded Cambodia, overthrew the Khmer Rouge regime, and installed a new government, leading to prolonged regional instability and international tensions during the Cold War.
• C. Sino–Soviet border conflict
  The Sino–Soviet border conflict was a series of armed clashes in 1969 between the Soviet Union and the People’s Republic of China along their disputed frontier, marking the peak of tensions in the Sino–Soviet split.
• D. Sino-French War
  The Sino-French War was a late 19th-century conflict between Qing China and France, fought largely over control and influence in Vietnam and resulting in the establishment of French colonial dominance in the region.
• E. First Indochina War
  The First Indochina War was a conflict from 1946 to 1954 between French colonial forces and the Viet Minh that led to the end of French rule in Indochina and set the stage for the Vietnam War.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.