For Years ABC Copier,a Copier Machine Supplier,enjoyed Strong Sales and a Huge

Multiple Choice

For years ABC Copier,a copier machine supplier,enjoyed strong sales and a huge share of the copier market,far ahead of its competition.However,over the years,ABC seldom asked customers for feedback.So when some of ABC's competition responded to what customers need and started offering copiers with new technology,ABC lost much of its market share.ABC utilizes a(n) ____ system.

A) open
B) isolated
C) blind
D) internal
E) closed