单项选择题

Which of the following statements are true types of types of local consistency for constraint propagation? 如下陈述中哪些是约束传播局部一致性的正确类型?

A、Arc consistency 弧一致
B、Graph consistency 图一致
C、k-consistency k一致
D、Loop consistency 环路一致
E、Node consistency 节点一致
F、Path consistency 路径一致
G、Tree consistency 树一致