Which of the following choices correctly defines a ring?
(R, +, ·, 0, 1) where (R, +) is an abelian group, (R, ·) is a monoid, and the multiplication operation · is both left and right distributive over the addition operation +.
(R, +, ·, 0, 1) where (R, +) is a monoid and (R, ·) is an abelian group
Baroque art features strong contrasts, while Rococo art prefers more subtle transitions
Baroque art is generally larger in scale than Rococo art

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