There is a detective submarine installed inside sea water post 26/11 incident to detect terrorists. It is moving with constant speed `V_theta` along a straight line and it sends a wave which travels with speed `V_w` = 1100m/sec in water. Initially waves are getting reflected from a fixed Island and the frequency detected by the submarine is found to be 20% more than the original frequency. When a terrorist ship moving towards the submarine with constant speed `V_s` comes in between the submarine and the island. Frequency of waves reflected from the ship is 80% more than the original frequency.
Velocity `V_0` is

Options

A. 50 m/sec
B. 100 m/sec
C. 10 m/s
D. 25 m/sec

Answer

B