Which statement about the distributed SYN flood attack is true?
A. A distributed SYN flood attack is carried out only by the valid address.
B. A distributed SYN flood attack is carried out only by spoofed addresses.
C. Botnet could be used to launch a distributed SYN flood attack.
D. A distributed SYN flood attack does not completely deplete TCBs SYN-Received state backlog.
E. A distributed SYN flood attack is the most effective SYN flood attack because it targets server memory.
