After downloading the new IPS attack database, the installation of the new database fails.
What caused this condition?
A. The new attack database no longer contained an attack entry that was in use.
B. The new attack database was revoked between the time it was downloaded and installed.
C. The new attack database was too large for the device on which it was being installed.
D. Some of the new attack entries were already in use and had to be deactivated before installation.