A steam boat goes across a lake up to a distance of 1200 meter and comes back. There is a uniform wind
blowing with velocity v so as to help the onward journey and to impede the journey back. If the uniform
speed of launch of the boat is 5 ms-1 and total time taken by the boat in going and coming back is 500 s,
the velocity v of the wind blow is

A

0.6 $$\mathrm{m\ s^{-1}}$$

B

0.8 $$\mathrm{m\ s^{-1}}$$

C

1.0 $$\mathrm{m\ s^{-1}}$$

D

1.2 $$\mathrm{m\ s^{-1}}$$