What attacks can you successfully launch against a server using the above technique?

After a client sends a connection request (SYN) packet to the server, the server will respond
(SYN-ACK) with a sequence number of its choosing, which then must be acknowledged (ACK) by
the client. This sequence number is predictable; the attack connects to a service first with its own
IP address, records the sequence number chosen, and then opens a second connection from a
forged IP address. The attack doesn’t see the SYN-ACK (or any other packet) from the server,
but can guess the correct responses. If the source IP address is used for authentication, then the
attacker can use the one-sided communication to break into the server. What attacks can you
successfully launch against a server using the above technique?

A.
Denial of Service attacks

B.
Session Hijacking attacks

C.
Web page defacement attacks

D.
IP spoofing attacks