Urgent Pleaseeeeee Help

A football is kicked at an angle with respect to the horizontal. Which one of
the following statements best describes the acceleration of the football during
this event if air resistance is neglected?

Choose the correct Letter Only. Thanks in advance.

A) The acceleration is zero m/s2 at all times.
B) The acceleration is 9.8 m/s2 at all times.
C) The acceleration is zero m/s2 when the football has reached the highest
point in its trajectory.
D) The acceleration is positive as the football rises, and it is negative as the
football falls.
E) The acceleration starts at 9.8 m/s2 and drops to some constant lower value
as the ball approaches the ground.