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A beam light is sent along the line x-y=...

A beam light is sent along the line x-y=1, which after refraction from the x-axis enters the opposite side by turning through `30^@` towards the normal at the point of incidence on the x-axis. Then the equation of the refracted ray is

A

`(2-sqrt3)x+y=2+sqrt3`

B

`(2+sqrt3)x-y=2+sqrt3`

C

`(2-sqrt3)x+y=(2+sqrt3)`

D

none of these

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The correct Answer is:
B
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