CDW Sells 800,000 Products from Hundreds of Companies to Small-

CDW sells 800,000 products from hundreds of companies to small- and medium-sized businesses that Use its products in day-to-day business. The company fills some 17,000 orders daily. Ninety-nine percent of its orders are filled the day received. CDW's staff gets merchandise out of the door so quickly that its entire inventory turns over every two weeks on average. CDW appears to have a(n) :

A) JIT inventory system.
B) EOQ inventory control system.
C) EDI response system.
D) market-response system.
E) sales replenishment system.