Let x denote the total number of one-one...

Let `x` denote the total number of one-one functions from a set A with 3 elements to a set B with 5 elements and `y` denote the total number of one-one functions form the set A to the set `A xx B` then
(A) `y=273x`
(B) `2y=91x`
(C) `y=91x`
(D) `2y=273x`

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