英语中反义疑问句则呢回答？

Question

如题所述

Answer 1

She
must
be
a
student,
isn't
she?
回答的时候，根据实际情况回答，是学生就回答yes，不是就回答no

Answer 2

isn't
she
.must如果是作为推断的意思讲的话，就根据所陈述的内容来回答，相当于是she
is
a
student,isn't
she?