In the expansion of (1+3x+2x^(2))^(6) ...

In the expansion of ` (1+3x+2x^(2))^(6)` the coefficient of ` x^(11)` is : a)144 b)288 c)216 d)576

A

144

B

288

C

216

D

576

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The correct Answer is:

D

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