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If Sr = |(2r, x, n(n + 1)), (6r^2 -1, y, n^2(2n + 3)), (4r^3 - 2nr, z, n^3(n + 1))|,

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If Sr = |(2r, x, n(n + 1)), (6r2 -1, y, n2(2n + 3)), (4r3 - 2nr, z, n3(n + 1))|, then the value of ∑Sr for r ∈ [1, n]  is independent of

(A) x only 

(B) y only 

(C) n only 

(D) x, y, z and n

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The correct option (D) x, y, z and n   

Explanation:

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