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Sciatic plexus in frog are formed by:

[A].	Union of ventral rami of 7th, 8th and 9th spinal nerves	[B].	Union of dorsal rami of 7th, 8th and 9th spinal nerves
[C].	Union of ventral rami of 8th, 9th and 10th spinal nerves	[D].	None of these

Answer: Option A