Regarding the description of the LDP Session establishment process, which of the following is correct? (Multiple Choice)

Regarding the description of the LDP Session establishment process, which of the following is correct? (Multiple Choice)
A . Two LSRs send HELLO messages to each other. The HELLO message carries the transmission address, and the party with the larger transmission address acts as the active party to initiate the establishment of a TCP connection.
B . If the Hello Message does not carry the Transport Address, the destination IP address of the Hello Message is used to establish a TCP connection, and the party with the larger IP address is the active party to initiate the establishment of the TCP connection.
C . The proactive party will send an Advertisement Message to negotiate the relevant parameters for establishing an LDP session, including the LDP protocol version and label distribution method. KeePalive maintains the timer value, maximum PDU length, and label space.
D . If the passive party can accept the relevant parameters, it will send Initialization I, message, and at the same time send a keepalive message to the active party.

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Answer: AD