Which of these statements about marketing information is correct?

A$.$ Marketing information is gathered from the internet and social media at very little cost.

B$.$ Most marketers know their customers and marketing information simply validates their beliefs.

C$.$ You can never have too much information about your customers and markets.

D$.$ New customer insights are rarely obtained from additional marketing information.

E$.$ The cost of obtaining, analyzing, storing, and maintaining marketing information can add up rapidly.