Which of the following is not true for the Python command: File =…

Key idea: In Python, open('story.txt', 'a+') opens the file for both appending and reading. If the file does not exist, it is created. Writes are always appended to the end of the file.

• You can write more text: 'a+' lets you append new data to the file. Any write goes to the file's end.

• You can read the file: reading is allowed, but after opening the file the file pointer is at the end. Use file.seek(0) to read from the start.

• Modifying existing content in place is not supported reliably: because append mode forces writes to the end, you cannot overwrite bytes already in the file. You can only add (append) new content.

• If the file does not exist, it will be created. Therefore opening with 'a+' does not raise an error for a missing file.

Conclusion: The statement "Command generates an error, if the file 'story.txt' does not exist." is not true because 'a+' creates the file if it is missing. The other statements are correct when interpreted as: you can write more text (append), you can read (after seeking), and you can change the file by appending (but not overwrite existing content in place).