单选题：With the adoption of spooling technology, the resource utilizati

With the adoption of spooling technology, the resource utilization is ______.@[A](1)
A. Improved
B. some times improved but other times decreased
C. decreased
D. improved with more possible error occurrence



A.Improved
B.some times improved but other times decreased
C.decreased
D.improved with more possible error occurrence


答案：A