フリー問題

問題文

The parcel carrier is setting out the plan of steps for its yard. One row on the sheet stands for the loads that wait in the vans at night, and the step chosen for that row is a bar and a bell on every van door. The yard has named the day those go on. Two points are open. The first is at what point the carrier writes what that step will leave on the row. The second is what each step in the plan carries of the row it answers. How should the carrier decide both points?

選択肢

1. The carrier writes what the step will leave on the row right after that day comes, and each step in the plan carries the index of the row it answers.
2. The carrier writes what the step will leave on the row well before that day comes, and each step in the plan carries the value of the row it answers.
3. The carrier writes what the step will leave on the row right after that day comes, and each step in the plan carries the value of the row it answers.
4. The carrier writes what the step will leave on the row well before that day comes, and each step in the plan carries the index of the row it answers.