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Sukriti throws a ball upwards , from a r...

Sukriti throws a ball upwards , from a rooftop which is 8 m high from ground level . The ball reaches to some maximum height and then returns and hit the ground .
It height of the ball at time t (in sec) is represented by h(m) , then equation of its path is given as `h = -t^2 + 2t + 8`
Based on above information , answer the following

The maximum height achieved by ball is

A

7 m

B

8 m

C

9m

D

10 m

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