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If `A` be one A.M. and `p ,q` be two G.M. `' s` between two numbers, then `2A` is equal to `(p^3+q^3)/(p q)` (b) `(p^3-q^3)/(p q)` (c) `(p^2+q^2)/2` (d) `(p q)/2`

A

`(p^(3)+q^(3))/(pq)`

B

`(p^(3)-q^(3))/(pq)`

C

`(p^(2)+q^(2))/(2)`

D

`pq/2`

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A
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