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If m is the A.M. of two distinctreal num...

If m is the A.M. of two distinctreal numbers l and n (1, n `gt` 1) and `G_(1), G_(2)` and `G_(3)` are three geometric means between and n then `(G_(1))^(4)+ 2(G_(2))^(4) + (G_(3))^(4) ` equals

A

`4l^(2)` mn

B

`4lm^(2)n`

C

`4 lmn^(2)`

D

`4 l^(2) m^(2) n^(2)`

Text Solution

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The correct Answer is:
B
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