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If `f(x) =ax^(2) + bx + c` satisfies the identity `f(x+1) -f(x)= 8x+ 3` for all `x in R` Then (a,b)=

A

`(2,1)`

B

`(4,-1`

C

`(-1,4)`

D

(-1,1)`

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The correct Answer is:
B
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