Chantrell is using some internal data from the$$ firm's information system that was collected about $10$ years ago. She would like to gain some insight into online buying patterns. What do you see is her biggest challenge with regard to using and evaluating this$$ data?

A$.$

Computing technology has changed a lot.

B$.$

Extracting the data.

C$.$

Understanding the data.

D$.$

Big data is difficult to manage.

E$.$

Data age quickly.