[Forum Event]Answer this Interesting Logical Problem and Win Gold!

COTK-Chen

There are four students attending the lecture in the classroom. These four students are good friends. Their first names are Anna, Barton, Carl and Paul. And their family names are Smith, Miller, Johnson and Williams.

Question： Could you guess the whole names of four students according to the following conditions?  Please tell us your answer. (Write all right combination names)
Condition 1: Anna's family name is one of Smith or Miller.
Condition 2: Barton's family name is one of Smith or Johnson.
Condition 3: Carl's family name is one of Miller or Johnson.
Condition 4: The family name Smith is one of Anna or Paul.
Duration: Ends on Aug. 27th
Servers: All Servers
Requirements:
1. You need to write all names and your reasons.
2. Your IGN and server
What's your prize:
Players with correct answer will be rewarded with 50 gold.
Note:
1.The rewards will be released on Aug.28th.
2.If you do not post your information under forum event page, rewards will not be sent to your account.
3.Please read the requirements carefully or else you'll lose the chance to be rewarded
4.No abusive or rude remarks allowed in this event
5.The final explanation is reserved by COTK