某房地产开发商同时开发甲、乙、丙、丁四个小区，拟定销售价格分别为1500元/m²、900元/m²、2000元/m²和2400元/m²，此时四个小区的需求价格弹性系数分别为-1.23、-0.98、-1.36和-1.43，则可以判定( )。

A．在任何情况下，丁的需求价格弹性最大

B．甲、丙、丁都有可能通过降价提高销售收入

C．在任何情况下，乙的需求价格弹性最小

D．此时乙的需求价格弹性最大

When forbidden to surf the Internet, teenagers often _____ surfing it, saying that it provides them with colorful entertainments, a convenient means of communication as well as useful information

A．argue about

B．argue with

C．argue for

D．argue against