Host A sends a TCP segment (SYN = 1, Seq = x) to Host B, expecting to establish a TCP connection with Host
B: If Host B accepts the connection request, the correct TCP segment sent by Host B to Host A may be ( ).
选项：

A:(SYN = 1, ACK = 1, Seq = y, Ack = x + 1);
B:(SYN = 0, ACK = 0, Seq = y, Ack = x + 1);
C:(SYN = 1, ACK = 1, Seq = x + 1, Ack = y);
D:(SYN = 0, ACK = 0, Seq = x + 1, Ack = y)