What is the access control matrix and what are two common methods for storing the information it contains? A$.)$ The access control matrix details the objects, resources, and rights in a system. The two most common methods are an access control list and capabilities list. B$.)$ The access control matrix allows users to visualize their rights in a system. The two most common storage methods are an array or compressed memory. C$.)$ The access control matrix provides the policy for preventing side channel attacks. The two most common ways of storing the information are embedded in firmware or in a downloadable database.