If \(x\#y\) is defined to equal \(\dfrac{x^2}{y}\) for all \(x\) and \(y,\) then \((-1\#2)\#3 =\)

(A) 4/3
(B) 1/3
(C) 1/12
(D) -1/12
(E) -4/3

[spoiler]OA=C[/spoiler]

Source: Manhattan GMAT