Which of the following statements is not true? A) Markets usually lead to efficiency.

B) If an economy is efficient, then it is possible to make only a few people better off without reducing other individuals' economic welfare.

C) Economic efficiency exists when all opportunities to make people better off have been fully exploited.

D) Economic efficiency exists when an economy realizes the maximum possible gains from trade given the available resources.

Haley photocopying purchases a paper from an out-of-state vendor. average weekly demand for paper is 150 cartons per week for which haley pays $15 per carton. in bound shipments from the vendor average 1000 cartoons with an average lead time of 3 weeks. haley operates 52 weeks per year; it carries a 4-week supply of inventory as safety stock and no anticipation inventory. the vendor has recently announced that they will be building a faculty near haley photocopying that will reduce lead time to one week. further, they will be able to reduce shipments to 200 cartons. haley believes that they will be able to reduce safety stock to a 1-week supply. what impact will these changes make to haley’s average inventory level and its average aggregated inventory value?