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The identity mapping I(c ) : S to S is d...

The identity mapping `I_(c ) : S to S` is defined as `I_(s)(x)=x` for `x in S`. Suppose `f : A to B` is a bijection, then which one of the following is true ?

A

`f^(-1)0 f ne I_(A)` but `f 0 f^(-1)=I_(B)`

B

`f^(-1)0 f = I_(A)` but `f 0 f^(-1)=I_(B)`

C

`f^(-1)0 f = I_(A)` but `f 0 f^(-1)ne I_(B)`

D

`f^(-1)0 f ne I_(A)` and `f 0 f^(-1) ne I_(B)`

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WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2007-MULTIPLE CHOICE QUESTIONS
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