According to the passage, which one is CORRECT？A．Complete DVD versions were all free on Yo

According to the passage, which one is CORRECT？

A．Complete DVD versions were all free on YouTube.

B．The conception of "free" is the same as that of the 20th century.

C．In the digital economy you will pay nothing to get information.

D．You will pay if you require the quality reporting and analysis.

请帮忙给出正确答案和分析，谢谢！