Rain is falling with speed $12\sqrt{2}$ m/s at an angle of 45° with vertical line. A man in a glider going at a speed of u at angle of 37° with horizontal with respect to ground. Find the speed (in n/s) of glider so that rain appears to him falling vertically. Consider motion of glider and rain drops in same vertical plane.

• A

  15

• B

  60

• C

  25

• D

  None of these