I believe that the answer is A: Extension but I am not 100% sure, hope this helps.
Answer: Multi-user issue
Explanation: A database management system scheme can have multi-user issue when the designing of the system is not made properly. The multi user issue rises when the users concurrently access the data from the database and related error get invoked due to some reason like repeatable reading issue, serialization, etc.
The reading problem is usually can be related to reading of the database in uncommitted manner, uncommitted reading, repeatedly reading etc.Thus, Cora and Owen are accessing the database concurrently which can create multi-user issue.
Answer:
Yep, saw her posts. Thanks for the warning though. I reported one of her posts. It's just another example of how desperate people are and what measures they will take to get attention. She'll probably be banned soon
Explanation:
Thank you for the warning though. I hope this reaches more people.