我是公民申请爸妈移民美国,家里还有一个姐姐,我也已经填表申请她了,请问: 爸妈填写230表,第21A)是问“Who will accompany you to the United States now"和B)"Who will follow you to the United States at a later date. A 是不是填写妈妈,B不用填?? 谢谢指教!!