英语翻译收到一个con-offer,里面有一句：Please submit a completed "Certifica

英语翻译
收到一个con-offer,里面有一句：Please submit a completed "Certification of Degree Result" form or provide the original (or an attested copy) of your certificatetranscript with an official translation into English confirming successful completion of your Master's Degree.
1,attested copy 是什么?
2,official translation into English 怎么定义?公证处公证的算吗?
3,submit a completed "Certification of Degree Result" form和provide the original (or an attested copy) of your certificatetranscript with an official translation into English 二者选其一就可以吧?