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Let X={1,2,3,4}, then one-one onto mappi...

Let `X={1,2,3,4}`, then one-one onto mappings `f:XtoX` such that `f(1)=1,f(2)ne2andf(4)ne4` are given by :

A

`{(1,1),(2,4),(3,2),(4,3)}`

B

`{(1,2),(2,4),(3,3),(4,2)}`

C

`{(1,2),(2,4),(3,3),(4,2)}`

D

None of these

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A
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