There are two reliable transmission modes and fast transmission modes for Network Expansion Functions establishing SSL VPN tunnels. Which of the following description about these two methods are wrong?

There are two reliable transmission modes and fast transmission modes for Network Expansion Functions establishing SSL VPN tunnels. Which of the following description about these two methods are wrong?
A . In the reliable transmission mode, SSL VPN encapsulates packets using the SSL protocol and uses the TCP protocol as the transmission protocol.
B . In the fast transmission mode, SSL VPN encapsulates packets using the Quick UDP Internet Connections (QUIC) protocol and uses UDP as the transmission protocol.
C . In the reliable transmission mode, the remote users need to establish an SSL VPN tunnel with the virtual gateway before transmitting data.
D . In the fast transmission mode, the remote users does not need to establish an SSL VPN tunnel with the virtual gateway before transmitting data.

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Answer: D