请教8老师和前辈，申请父母移民DS 260表上Is your spouse immigrating to the U.S. wi

请教8老师和前辈，同时申请父母移民，他们分别有case number，那么

DS 260表上Is your spouse immigrating to the U.S. with you?如何回答？

如果选No，接下来Is your spouse immigrating to the U.S. at a later date to join you?这个问题又如何回答？谢谢!