Manually cleaning data is done manually which makes it challenging. This make it prone to mistakes.
The number and letter are switched. This question needs more context to get a accurate answer.
Answer:B) Archives/backups
Explanation: Archive is the group of records of data that are saved for the future use.These are the historic data that is not currently used in the actual location .
Backup is the the the copy of the group of data that is not in the original form to be used in future. Thus the correct option is option(B).
Updating of the plans by the technician cannot be done through other given options because they don't hold the historic records of the data for the renewing of the plans.
