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Let `a_1 , a_2, a_3 . . .` are in GP such that `a_2+a_4=2a_3+1 , a_2+a_3=2a_4` then the value of `a_2+a_3+2a_4` is

A

`4/27`

B

`14/9`

C

`3/14`

D

`3/19`

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