When light is incident from air to glass at an angle 57⁰,the reflected beam is completely polarised. If the same beam is incident from water to glass, the angle of incidence at which reflected beam is completely polarised will be

• A

  $\theta ={57}^{\circ }$

• B

  $\theta >{57}^{\circ }$

• C

  $\theta <{57}^{\circ }$

• D

  cannot be determined.