Answer: option B.(1) and (3)
(1). Material flow is determined by the need of the downstream workstation
(3). A single piece flow is ideal for a push system and not for a pull system
Explanation:
A pull system is a Lean manufacturing principle created to reduce waste in the production process. A pull system is to build products based on actual demand and not on forecasts.
One of the most important principles in the Lean Philosophy is the Pull Principle. The Pull principle is based on the assumption that one should only produce what is asked for by the customer. The Pull principle can be applied in more than just production, it can be applied in the office and even in life.