资金证明:0 dollar? 30000 dollar?

在填写资金证明的时候，我中和了两种不同的意见：

国内大部分的“飞友”都主张一刀都不要填。也有的认为申请B-school需填个几千美刀。

但已经在B-school毕业的朋友( 本科）认为需填8000-12000。

又由于这个学校是垫底的(rank 50-60)，所以填了19000，还开了资金证明。没有想到今天收到该校的Mail,居然叫我补足 30000.请问：

1.我需要按要求办吗？
2.是不是会影响奖学金？
3.人民币的资金证明会被接收吗？

信的原文如下：

The following documents are required before we can evaluate your file:
>
>1.  Form 7 (GSU Financial Statement) - you need to correct the $amount needed.  For fall semester 2003 you will need approx. $30,000.
>
>2.  Bank letter (original, signed, dated showing approx $30,000. available)
>
>3.  Affidavit of Support - from your sponsor stating the exact amount available for your studies.
>
>Once these documents are received, your file will be evaluated and if the evaluator requires additional documents, you will be notified.