Which One of the Following Statements About Inventory Control Systems

Which one of the following statements about inventory control systems is best?

A) Visual systems are intended for use with high- value items like jet engines, that don't experience a steady demand.
B) The base- stock system is mostly used for inexpensive items since it maximizes cycle inventory costs.
C) A base- stock system minimizes ordering and setup costs by placing orders more infrequently.
D) A single- bin system is essentially a P system, with the target inventory and current inventory position established visually.