解析一道学生认为难题的简单题：
Radio stations with radio data system (RDS) technology broadcast special program information that only radios with an RDS feature can receive. Between 1994 and 1996, the number of RDS radio stations in Verdland increased from 250 to 600. However, since the number of RDS-equipped radios in Verdland was about the same in 1996 as in 1994, the number of Verdlanders receiving the special program information probably did not increase significantly.
原文小结：RDS-radio stations 增加(radio数量不变)-- 接收用户Verdlanders数量没增长
Which of the following is an assumption on which the argument depends?
(A). Few if any of the RDS radio stations that began broadcasting in Verdland after 1994 broadcast to people with RDS-equipped radios living in areas not previously reached by RDS stations. 很少RDS电台给之前未涉及地区的人们放广播，few是否定概念。选项谈论对象是电台与人，有关。
(B). In 1996 most Verdlanders who lived within the listening area of an RDS station already had a radio equipped to receive RDS. 人有设备。无关。
(C). Equipping a radio station with RDS technology does not decrease the station's listening area. 装配电台不减少收听区域。无关
(D). In 1996 Verdlanders who did not own radios equipped to receive RDS could not receive any programming from the RDS radio stations that began broadcasting in Verdland after 1994. 人没设备不能接收。无关
(E). The RDS radio stations in Verdland in 1996 did not all offer the same type of programming. 电台没有提供同类节目。无关。
答案：A
GMAT逻辑很简单的道理：有关无关，正向逆向，导致抑制。
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