Scenario B:

Suppose you are given the process flowchart shown below.

No buffer space between stations, so upstream tasks must wait if downstream task is busy or if downstream task is unable to start

Task $4$ is an assembly stage $-$ it requires $1$ unit from task $2$ AND one unit from Task $3$ in order to do its work.

Each task can process $1$ unit at a time

Which task$($s$)$ would be starved? Check all that apply.

Task $1$

Task $2$

Task $3$

Task $4$