Use the set-roster notation to indicate the elements in the set.

S = {n Z| n = (1)^k , for some integer k}.

Group of answer choices

none of the above

{1,2,3,...}

{-1,0,1}

{...,-1,1,-1,1,...}

{...,-1,0,1,...}

{1,-1,1,-1,...}

null

{-1,-2,-3,...}

{-1,1}