An element of a commutative ring R(1≠0) is nilpotent if __________ – McqOptions

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1.	An element of a commutative ring R(1≠0) is nilpotent if __________
A.	a+1=0
B.	aⁿ = 0, for some positive integer n
C.	aⁿ = 1, for some integer n
D.	a² = 0
Answer» C. aⁿ = 1, for some integer n

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