When a stone is dropped from a building 200 m high, its speed is proportional to

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When a stone is dropped from a building 200 m high, its speed is proportional to the time elapsed after dropping. The distance traveled is proportional to the square of the time elapsed. After 1 second the speed of the train was 10 m/sec and it was 190 m above the ground. When its speed is 25 m/sec, what would be its distance from the ground?

A. 140 m
B. 137.5 m
C. 125.75 m
D. 142.5 m

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