A balloon leaves the earth at a point A and rises vertically at uniform speed. A

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A balloon leaves the earth at a point A and rises vertically at uniform speed. At the end of 2 minutes, John finds the angular elevation of the balloon as 60°. If the point at which John is standing is 150 m away from point A, what is the speed of the balloon?

Options:

A . 0.63 meter/sec

B . 2.16 meter/sec

C . 3.87 meter/sec

D . 0.72 meter/sec

Answer: Option B

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