单选题：The most important matter in designing a time-sharing system is_

The most important matter in designing a time-sharing system is__________ . @[B](1)
A. flexibility and adaptability
B. interactivity and response time
C. turnaround time and system throughput
D. reliability and real-time





A.flexibility and adaptability
B.interactivity and response time
C.turnaround time and system throughput
D.reliability and real-time


答案：B