Question: Let R be a commutative ring with unity and let I be an ideal. Leta, b E R and let a = [a] and [3

Let R be a commutative ring with unity and let I be an ideal. Leta, b E R and let a = [a] and [3 = [b]. Which of the following statements are equivalent to " a = "? (1 point per correct answer) aEIandbEI b=a+xforsomexEI for all representatives a' of [a] and b' of [b], a' b' E I [a - b] = [0]

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