You are a network engineer, can you tell me how do TCP SYN attacks take advantage of TCP to prevent new connections from being established to a host under attack?

A.
taking advantage of the host transmit backoff algorithm by sending jam signals to the host

B.
filling up a host listen queue by failing to ACK partially opened TCP connections

C.
incrementing the ISN of each segment by a random number, causing constant TCP retransmissions

D.
sending multiple FIN segments, forcing TCP connection release