单选题：A computer has only one CPU, however with multiprogramming opera

A computer has only one CPU, however with multiprogramming operating system. At a snapshot, it is running in user mode and has 5 user processes loaded. Therefore, at most ______ user processes that are in ready status. @[C](1)

A. 0
B. 1
C. 4
D. 5




A.0
B.1
C.4
D.5


答案：C