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If set A={1, 2, 3, 2 }, then the find th...

If set `A={1, 2, 3, 2 }`, then the find the number of onto functions from `A to A` such that `f(k)` is a multiple of 3, whenever `k` is a multiple of 4.
(A) `6^5xx15!`
(B) `5^6xx15!`
(C) `6!xx5!`
(D) `6!xx15!`

A

`(15)! xx 6!`

B

`5^(6)xx15`

C

`5! Xx 6!`

D

`6^(5) xx (15)!`

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