In the features of the video surveillance platform, AE means ()
A . Encryption of streaming media to ensure video security during transmission and improve system security
B . Bandwidth adaptive, the front end dynamically changes the frame rate and encoding quality to transmit the video to ensure the smoothness of the video
C . Data safe, backup the key data of the system disk to the data disk to improve the survivability of the system
D . Forward error correction, 5% packet loss can be played smoothly.
Answer: A