单选题：A system has 3 concurrent processes, each of which requires 4 it

A system has 3 concurrent processes, each of which requires 4 items of resource R. What is the minimum number of resource R in order to avoid the deadlock. @[B](1)
A. 9
B. 10
C. 11
D. 12




A.9
B.10
C.11
D.12


答案：B