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If a,b,c are in A.P., then a^2(b+c)+b^2(...

If a,b,c are in A.P., then `a^2(b+c)+b^2(c+a)+c^2(a+b)` is equal to

A

`2/9(a+b+c)^3`

B

`1/8(a+b+c)^3`

C

`3/10(a+b+c)^3`

D

`((a+b+c)^3)/9`

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The correct Answer is:
A
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