Which of the following conditions correctly defines the concept of Progress in the context

of synchronization?

A$)$When a thread is executing in its critical section, no other threads can be executing in

their critical sections.

B$)$ If no thread is executing in its critical section. and if there are some threads that wish to

enter their critical Sections, then one of these threads will get into the crtical section.

C$)$ Several processes access and manipulate the same data in the critical section.

D$)$ All of the above.