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`P` is a point on the line `y+2x=1,` and `Qa n dR` two points on the line `3y+6x=6` such that triangle `P Q R` is an equilateral triangle. The length of the side of the triangle is `2/(sqrt(5))` (b) `3/(sqrt(5))` (c) `4/(sqrt(5))` (d) none of these

A

`(1)/(sqrt15)`

B

`(2)/(sqrt15)`

C

`(2)/(sqrt5)`

D

`(4)/(sqrt5)`

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The correct Answer is:
B
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