A ball of mass 1 kg is thrown vertically upwards and returns to the ground after 3 seconds. Another ball, thrown at 60 with vertical also stays in air for the same time before it touches the ground. The ratio of the two heights are

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

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