For a quadratic function that models the height about ground of a projectile, how do you determine the maximum height of the time when the projectile reaches the ground? A) The maximum height is the vertex of the quadratic function, which occurs at b/2a. The projectile reaches the ground when the height is zero, which occurs at the either polynomial zero.

B) The maximum height is the vertex of the quadratic function, which occurs at -b/2a. The projectile reaches the ground when the height is zero, which occurs at the either polynomial zero.

C) The maximum height is the vertex of the quadratic function, which occurs at b/2a. The projectile reaches the ground when the height is zero, which occurs at the lesser polynomial zero.

D) The maximum height is the vertex of the quadratic function, which occurs at -b/2a. The projectile reaches the ground when the height is zero, which occurs at the greater polynomial zero.