Consider a linear list based implementation in a file system. Each directory is a list of nodes, where each node contains the file name along with the file metadata, such as the list of pointers to the data blocks. Consider a given directory foo.Which of the following operations will necessarily require a full scan of foo for successful completion?

• A. Renaming of an existing file in foo
• B. Opening of an existing file in foo
• C. Deletion of an existing file from foo
• D. Creation of a new file in foo