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In a triangle if the ex-radii r(1),r(2),...

In a triangle if the ex-radii `r_(1),r_(2),r_(3)` are in the ration `1: 2: 3` , then its sides are in the ratio

A

`5:8:9`

B

`5:4:3`

C

`7:9:11`

D

`1:2:3`

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The correct Answer is:
A
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