Question: None of the others. Suppose is a binary operation on a set S. Which statement best describes problem? Must have either an identity or

None of the others. Suppose is a binary operation on a set S. Which statement best describes problem? Must

None of the others. Suppose is a binary operation on a set S. Which statement best describes problem? Must have either an identity or a zero (il exists), but not both. Must only have at most one idempotent. Au idempotent (iLexists) must be either an identity or a zero. If it has an identity and a zero, then they must be the same element.

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