What is the main advantage of using a mandatory access control (MAC) model instead of a discretionary access control (DAC) model?
A. MAC is more secure because the operating system ensures security policy compliance.
B. MAC is more secure because the data owner can decide which user can get access, thus providing more granular access.
C. MAC is more secure because permissions are assigned based on roles.
D. MAC is better because it is easier to implement.
