单选题：In order to implement mutual exclusion on a critical resource fo

In order to implement mutual exclusion on a critical resource for competing processes, only one program at a time should be allowed _______ .@[A](1)
A. In the critical section of the program
B. To perform message passing
C. To Exhibit cooperation
D. None of the above





A.In the critical section of the program
B.To perform message passing
C.To Exhibit cooperation
D.None of the above


答案：A