Sonja Greer Called the IT Help Desk in a Bad

Multiple Choice

Sonja Greer called the IT Help Desk in a bad mood."I'm trying to open an Excel file,but I get a message that says that the file is locked for editing.Why is this happening to me?" The answer is likely that

A) the file is corrupted due to a computer virus.
B) Sonja probably opened the file as read-only.
C) concurrent update controls have locked the file.
D) there is no problem. Sonja is editing the file, so it is locked.