UCI EECS AD

2月26号收到邮件，要2周后回复。这个不知道回复去后反悔可以吗？

Congratulations! We are pleased to inform you that the members of the
Electrical Engineering and Computer Science admissions committee have
recommended that you be admitted for graduate degree study at the
University of California, Irvine beginning in the Fall 2013 academic
term.

This is a very competitive application process, with over 1400
applicants this year, and less than 15% will be admitted. You should
be proud of your academic accomplishments so far! We are proud of
you, and we hope you choose to join us to continue your graduate
studies.

Should you decide to accept this offer, you will be required to
support yourself financially. Therefore, if you choose to accept
(before you can be formally admitted), you will need to provide
documents that show you have the finances to support yourself
throughout your time at UC Irvine.

These documents are required in order for your visa to be processed by
the US government. After providing these documents, you will receive a
letter with your official offer of admission to the university.

Should you decide to accept this offer, please email your acceptance
to eecsgrad@uci.edu within two weeks of receiving this notice.  If we
do not hear from you by then, we will assume that you will be unable
to attend in Fall 2013.

Appended below are detailed instructions for you to follow if you
decide to accept our offer.

Once again, warm congratulations on a promising career! We hope to see
you in the fall!

Sincerely,
Admissions Committee
Electrical Engineering and Computer Science
University of California, Irvine

UCI也开始PhD AD了么。。。。。耍流氓么。。。。

我申请的Phd，邮件里面说graduate degree study. 不会是master吧？这个如果我accept之后不想去可以吗？

有陶瓷到一个系里的老师，大概来回联系了三四次，老板说暂时没钱，但是将来有望拿到，还建议我之后入学了选他教的课。