Which is the least ideal Synchronization Status for Security Management Server High Availability deployment?

Which is the least ideal Synchronization Status for Security Management Server High Availability deployment?
A . Synchronized
B . Never been synchronized
C . Lagging
D . Collision

Answer: D

Explanation:

Reference: https://sc1.checkpoint.com/documents/R80/CP_R80_SecMGMT/html_frameset.htm? topic=documents/R80/CP_R80_SecMGMT/120712