Answer:A. The users of this system sometimes lose sales because of little or no inventory buffers.
Explanation:Just-in-time management is an inventory management system where only the required amount of inventory will be supplied or delivered at the time it is needed. This type of inventory management system does not support the excess storing of raw materials or other resources used for processing or production.
This practice was earlier started in Toyota in Japan as a LEAN MANAGEMENT SYSTEM to reduce wastes.