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In a `triangle ABC`, `2 angle ABC=9 angle ACB` and `2 angle BAC = 7 angle ACB`. If AB = 8 cm, AC = 17 cm, then the length of BC is:
`triangle ABC` में, `2 angle ABC=9 angle ACB` और `2 angle BAC = 7 angle ACB`| यदि AB =8 सेमी, AC =17 सेमी है, तो BC की लंबाई है:

A

a)8

B

b)25

C

c)15

D

d)9

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