Which of the Following Descriptions Are Not Correct for a Push

Which of the following descriptions are not correct for a push system?
1) There is no clear visibility between processes
2) The workers on shop floor lack the autonomy to stop the manufacturing on their own initiative
3) Production is only initiated when the down- stream process initiates its own activity
4) The WIP inventory levels are high at most locations

A) (2) and (4)
B) (4)
C) (1) and (3)
D) (3)