主机甲向主机乙发送一个(SYN = 1, seq = 11220)的TCP段,期望与主机乙建立TCP连接,若主机乙接受该连接请求,则主机乙向主机甲发送的正确的TCP段可能是
A.
(SYN = 1, ACK = 1, seq = 11221, ack = 11221)
B.
(SYN = 0, ACK = 0, seq = 11221, ack = 11221)
C.
(SYN = 1, ACK = 1, seq = 11220, ack = 11220)
D.
(SYN = 0, ACK = 0, seq = 11220, ack = 11220)