Which of the following will occur if an operator types the command vi file.out?（）

• A、If the file exists it will be opened for editing. If the file does not exist an error message will be displayed.
• B、If the file exists it will be opened for editing. If the file does not exist a new file with the name file.out will be created and opened for editing.
• C、If the file exists an error message will be displayed. If the file does not exist a new file with the name file.out will be created and opened for editing.
• D、If the file exists the operator will be asked whether to open the file or overwrite the file. If the file does not exist a new file with the name file.out will be created and opened for editing.