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Consider (1+x)^(n+1)=A(0)+A(1)x+A(2)x^(2...

Consider `(1+x)^(n+1)=A_(0)+A_(1)x+A_(2)x^(2)+………………+A_(n+1)x^(n+1)`
and `a_(n)=1++q^(2)+……………+q^(n)` and `b_(n)=1+((q+1)/2)+((q+1)/2)^(2)+……….+((q+1)/2)^(n)`
Where `q!=1`
`A_(1)+A_(2)a_(1)+A_(3)a_(2)+……………+A_(n+1)a_(n)` equals to

A

`b_(n)`

B

`nb_(n)`

C

`2b_(n)`

D

`2^(n)b_(n)`

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