Which statement best describes the difference between an activity list and an activity schedule?

1) An activity attribute provides more schedule-related information about each activity than an activity list.

2) An activity list provides a more concrete list of milestones for a project than an activity attribute.

3) An activity attribute is a tabulation on activities to be included on a project schedule whereas an activity list is not.

4) As opposed to an activity attribute, an activity list provides resource requirements and constraints related to activities.