What sequence of packets is sent during the initial TCP three-way handshake?

What sequence of packets is sent during the initial TCP three-way handshake?

A.
SYN,SYN-ACK,ACK

B.
SYN,URG,ACK

C.
SYN,ACK,SYN-ACK

D.
FIN,FIN-ACK,ACK

Explanation: