When an object is shot from the bottom of a long smooth inclined plane kept at an angle 60 with horizontal, it can travel a distance x 1 along the plane. But when the inclination is decreased to 30 and the same object is shot with the same velocity, it can travel x 2 distance. Then x 1 : x 2 will be:

1. A. 1 : 2 3
2. B. 1 : 2
3. C. 2 : 1
4. D. 1 : 3

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