单选题：Which one of the following occurrences in the kernel is LEAST li

Which one of the following occurrences in the kernel is LEAST likely?@[A](1)
A. An external interrupt results in a BLOCKED process becoming READY
B. A system call results in a BLOCKED process becoming READY
C. An external interrupt results in a RUNNING process becoming BLOCKED
D. A system call results in a RUNNING process becoming BLOCKED





A.An external interrupt results in a BLOCKED process becoming READY
B.A system call results in a BLOCKED process becoming READY
C.An external interrupt results in a RUNNING process becoming BLOCKED
D.A system call results in a RUNNING process becoming BLOCKED


答案：A