Premise: AC/DC are an Australian rock band , formed in 1973 by brothers Malcolm and Angus Young . Membership subsequently stabilised until bassist Mark Evans was replaced by Cliff Williams in 1977 for the album Powerage . Drummer Phil Rudd was fired in 1983 and replaced by ex-A II Z drummer Simon Wright , who left to join Dio in 1989 . Stiff Upper Lip , released in 2000 , was well received by critics .
Hypothesis: AC/DC disbanded in 1973.
Label: CONTRADICTION