A train is moving at a constant speed on a surface inclined upward at a 15.0° with the horizontal and travels 300 meters in 5 seconds. Calculate the horizontal velocity of the train at the end of 3 seconds.
A. 57.95 meters/second
B. 15.52 meters/second
C. 98.02 meters/second
D. 53.00 meters/second
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