Dependency situation: ”Once lecturer have uploaded the video tutorial for her student to watch, the students start to following the tutorial in their pace”

A. * It’s referring to the start of one task triggers the start of the second task B. it’s referring to the predecessor task finishes, the successor task start.

C. One task continues only as long as another task in progress D. The predecessor occurs after the successor and the start of the predecessor controls the finish of the successor