问题详情

Which is not one of the reasons why the author doesn"t think technological communication such as using email can improve communication？
A．Technological system is easily out of date.
B．Employees may need additional training to know how to use.
C．People should use face-to-face communication.
D．These communication tools cost a lot so that not all can afford.请帮忙给出正确答案和分析，谢谢！