Triple

Target entity: Operation Rolling Thunder
Context triple: [Operation Barrel Roll, coordinatedWith, Operation Rolling Thunder]

• A. Operation Rolling Thunder chosen
  Operation Rolling Thunder was a sustained U.S. aerial bombing campaign against North Vietnam from 1965 to 1968, aimed at weakening North Vietnamese capabilities and will to fight during the Vietnam War.
• B. Tet Offensive
  The Tet Offensive was a major 1968 campaign of surprise attacks by North Vietnamese and Viet Cong forces across South Vietnam that dramatically shifted U.S. public opinion and marked a turning point in the Vietnam War.
• C. Operation Linebacker
  Operation Linebacker was a major U.S. aerial bombing campaign conducted in 1972 against North Vietnam to disrupt its supply lines and support South Vietnamese forces.
• D. Battle of Khe Sanh
  The Battle of Khe Sanh was a major and protracted siege in early 1968 in which U.S. Marines and South Vietnamese forces defended a remote base against a large-scale North Vietnamese assault, becoming one of the most famous and controversial engagements of the Vietnam War.
• E. U.S. bombing of Cambodia
  The U.S. bombing of Cambodia was a controversial and extensive American aerial campaign during the Vietnam War era that targeted suspected communist sanctuaries in Cambodia, causing significant civilian casualties and political destabilization.
• F. None of above.
• G. Unsure - the case is ambiguous/there is not enough information to decide.