Answer:
The correct answer is letter "B": a license to use a single copy of the software.
Explanation:
While purchasing computer software there are usually options for purchasing to have access as a lonely server, as a family network, or as an organization. The difference between one and another relies on how many servers can use the same copy of the software. By default, software copies are sold to be used in one computer only. When the other uses are necessary, the user should look for the option that fits his or her needs. The more computers can access a software copy, the higher the price of that bundle.
Thus, Xavier purchased his computer-aided design software without specifying in how many servers he will install the program. In such a scenario, he possibly purchased a single copy of the software.