问题详情

What does OReillys experience with the iPhone manual tell us？

A．Apple has found a way to persuade a generation of web users to pay for some contents.

B．The price of the book now is about 5 times of its initial price.

C．Media companies should never raise the price of the content.

D．All contents provided have to be cheap to attract the users.

请帮忙给出正确答案和分析，谢谢！