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If DeltaABC,ifr(1)=2r(2)=3r(3) "then"b:c...

If `DeltaABC,ifr_(1)=2r_(2)=3r_(3) "then"b:c` equals

A

`4:3`

B

`5:4`

C

`2:1`

D

`3:2`

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