In DeltaABC the mid points of the side...

In `DeltaABC` the mid points of the sides AB, BC and CA are `(l, 0, 0), (0, m, 0) and (0, 0,n)` respectively. Then, `(AB^2+BC^2+CA^2)/(l^2+m^2+n^2)` is equal to

A

`2`

B

`4`

C

`8`

D

`16`

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The correct Answer is:

(c)

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