A already assigned variable cannot be assigned twice You can make the variable change over to a new one or call a whole new one to assign one without a value or It might be possible to do v=n (v is variable and n is number / value)
Answer:
B- Workgroup model
Explanation:
A workgroup model can be defined as a process which enables system to be peer together in order to access the resources shared like files and printers at the same time.
In work group microsoft operating systems tend to share files, printers, and even Internet connection among them which is why work group is important especially in a place in which their are various computers with limited files and printer or internet connection.