If a, b, c are in AP and if their square...

If a, b, c are in AP and if their squares taken in the same order form a GP, then `(a+c)^(4)` is equal to

A

`16a^(2)c^(2)`

B

`4a^(2)c^(2)`

C

`8a^(2)c^(2)`

D

`2a^(2)c^(2)`

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The correct Answer is:

C

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