Which statement about ‘jus cogens’ is NOT correct?

A、Rulesofjuscogenscannotbederogatedfrombyinternationalpersonality.;
B、Obligationsofastateunderjuscogensareonestowardstheinternationalcommunityasawhole.;
C、Rulesofjuscogenscanbecreatedbyasimplemajorityofstatesandimposedonaminority.;
D、Besidesnonuseofforceinsolvinginternationaldisputes,outlawingofslavetrading,piracyandgenocidehasalsobeenidentifiedasinternationaljuscogens.