Which of the Following Controls Helps to Prevent Error with Set

Multiple Choice

Which of the following controls helps to prevent error with set up of access rights,and also helps to prevent unauthorized changes to the access rights?

A) independent comparison to check that they have been set up properly
B) access rights forms that are signed by the user's manager
C) tracking all accesses in an access log by user identification code
D) using audit software to provide a list of who has accessed sensitive data