A.α<-1 B.-1≤α<0 C.0≤α<1 D.α≥1

A.α<-1 B.-1≤α<0 C.0≤α<1 D.α≥1

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A.σb:a>b>c,E:a>b>c,δ:b>c>a B.σb:a>b>c,E:b>a>c,δ:c>b>a C.σb:a>b>c,E:c>b>a,δ:c>b>a D.σb:a>b>c,E:b>a>c,δ:b>c>a

A.σb:a>b>c,E:a>b>c,δ:b>c>a B.σb:a>b>c,E:b>a>c,δ:c>b>a C.σb:a>b>c,E:c>b>a,δ:c>b>a D.σb:a>b>c,E:b>a>c,δ:b>c>a

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