Select True or False for the following statements

An access control matrix that consists of a large number of groups, and objects will take up more storage space than an access control list of the same number of groups, and objects.

True

A user at security level $2$ using the Bell$-$Lapadula model can only read objects at level $2.$

True

In asymmetric secret$-$key cryptography, the encryption key is always announced publicly.

False