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Let n in N. If (1+x)^(n)=a(0)+a(1)x+a(2)...

Let `n in N`. If `(1+x)^(n)=a_(0)+a_(1)x+a_(2)x^(2)+…….+a_(n)x^(n)` and `a_(n)-3,a_(n-2), a_(n-1)` are in AP, then :

A

`a_(1),a_(2),a_(3)` are in AP

B

`a_(1),a_(2),a_(3)` are in HP

C

`n=17`

D

`n=14`

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A
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