Refer to the exhibit. Switch P1S1 is not applying VLAN updates from switch P2S1.  What are three  reasons why this is not occurring？（）

• A、 Switch P2S1 is in server mode.
• B、 Switch P1S1 is in transparent mode.
• C、 The MD5 digests do not match.
• D、 The passwords do not match.
• E、 The VTP domains are different.
• F、 VTP trap generation is disabled on both switches.