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Hello!

Anyway to solve this one ?

If 1^2+2^2+3^2+....+9^2=285, 3^2+6^2+9^2+12^2+15^2+-27^2=?
(A) 855
(B) 2,565
(C) 7,695
(D) 23,085
(E) 69,255

Source: Unknown

[Reveal] Spoiler:
OA:B


Thanks so much!!

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