23. A whiffle ball is tossed straight up, reaches a highest point, and falls back down. Air resistance is not negligible. Which of the following statements are true?
I. The ball's speed is zero at the highest point.
II. The ball's acceleration is zero at the highest point.
III. The ball takes a longer time to travel up to the highest point than to fall back down.
(A) I only
(B) II only
(C) I \& II only
(D) I \& III only
(A) I only
(B) II only
(C) I & II only
(D) I & III only