(Choose 1 answer)
Which of the following is the Issue of Concurrency?
A. Blocking: Processes can block waiting for resources. A process could be blocked for a long period waiting for input from a terminal
B. Resource utilization: It enables that the resources that are unused by one application can be used for other applications
C. Average response time: Without concurrency, each application has to be run to completion before the next one can be run
D. None of the others
