The points in the graph below represent the halts of a lift for durations of 1 minute, over a period of 1 hour.Which of the following statements are correct?i. The elevator never moves directly from any non-ground floor to another non-ground floor over the one hour periodii. The elevator stays on the fourth floor for the longest duration over the one hour period

• A. Only i
• B. Only ii
• C. Both i and ii
• D. Neither i nor ii