Which of the Following Describes the Completeness Data Quality Characteristic

Which of the following describes the completeness data quality characteristic?

A) The degree to which all the required data is present in the data collection
B) The characteristic that requires each real-world instance to be represented only once in the data collection
C) The extent to which the data properly conforms to and matches up with the other data
D) The degree to which the data is aligned with the proper time window in its representation of the real world