Winston, an architect, is adding a stalrway to a parking garage. The stairway must be 3 meters high, and he has enough room on t
he ground for the staircase to reach the ground 9 meters away, which will satisfy local building codes. To the nearest tenth, how long will the stair stringer be? A. 9.0 meters B. 9.5 meters C. 81 meters D. 90 meters