Explanation
A retina scan could be used in conjunction with an RSA token because it is a biometric factor, and thus a different type of factor. An access card, RFID, and USB thumb drive are all items in possession of a user, the same as an RSA token, and as such would not be appropriate.

The Uptime Institute publishes the most widely known and used standard for data center topologies and tiers. The National Fire Protection Association (NFPA) publishes a broad range of fire safety and design standards for many different types of facilities. Building Industry Consulting Services International (BICSI) issues certifications for data center cabling. The International Data Center Authority (IDCA) offers the Infinity Paradigm, which takes a macro-level approach to data center design.

Data owner is a management role that's responsible for all aspects of how data is used and protected. The database administrator, data custodian, and data processor are all technical roles that involve the actual use and consumption of data, or the implementation of security controls and policies with the data.