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

B

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

C

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

D

none of these

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The correct Answer is:
A
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