请教8老师: 关于N-400 withdrawal

上个周六寄出了N-400 withdrawal信(certified mail),这个周三收到了USCIS的return receipt。

昨天周四收到USCIS的interview通知信。请教8老师：

1、take no further action, no come to interview, OR

2、return interview letter together with the copy of N-400 withdrawal, OR

3、go to interview with the copy of N-400 withdrawal?

十分感谢8老师百忙中指教！