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A stationary fish in the water notices that a bird in the air approaches the fish with a velocity $12 m s^{- 1}$ . The true velocity of bird is $(μ_{w a t e r} = \frac{4}{3})$
$9 m s^{- 1}$
$10.5 m s^{- 1}$
$15 m s^{- 1}$
$16 m s^{- 1}$

A

9 m s^{- 1}

B

10.5 m s^{- 1}

C

15 m s^{- 1}

D

16 m s^{- 1}

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