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If a,b,c are in HP, then prove that (a+...

If a,b,c are in HP, then prove that `(a+b)/(2a-b)+(c+b)/(2c-b)gt4`.

A

`(2)/(bc)-(1)/(b^(2))`

B

`(1)/(4) ((3)/(c^(2))+ (2)/(ca)-(1)/(a^(2)))`

C

`(3)/(b^(2))-(2)/(ab)`

D

None of these

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The correct Answer is:
D
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