30. Given the follow DNS records, which statement is NOT correct？ $ORIGIN tyc.edu.tw. tysh IN SOA zeus.tysh.tyc.edu.tw. admin.tysh.tyc.edu.tw. (A) The authoritative name server for domain tyc.edu.tw is zeus. (B) The IP address of the mail server for user@tysh.tyc.edu.tw is 210.50.90.2. (C) mail is the aliase of host hermes. (D) admin@tysh.tyc.edu.tw is responsible for the domain tysh.tyc.edu.tw.