In triangle ABC, sin((A)/(2))sin((C)/(2)...

In `triangle ABC, sin((A)/(2))sin((C)/(2))=sin((B)/(2))` and '2s' is the perimeter of the triangle.
Then the value of s is

A

(a) 2b

B

(b) b

C

(c) 3b

D

(d) 4b

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The correct Answer is:

A

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