单选题 When mentioning "the ＄4 million to ＄10 million range" (Lines 3-4, Paragraph 3) the author is talking about _______.

【正确答案】 B
【答案解析】从第3段"Home prices are...broker Barbara Corcoran．”和"Instead of...real-estate broker．”推断，这里一直讲的是房地产业，选B。