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In a triangle A B C , if A B=A C\ a n d\...

In a triangle `A B C ,` if `A B=A C\ a n d\ A B` is produced to `D` such that `B D=B C ,` find `/_A C D\ :\ /_A D C`

A

`1 : 3`

B

`2 : 1`

C

`3 : 1`

D

`1 : 2`

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The correct Answer is:
C
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