The Major Difference Between the Information-Based Model and the Content-Based

The major difference between the information-based model and the content-based model is:

A) the presence of ads in the content-based model
B) the ability to contact the site developoer in the information-based model.
C) the presence of an order-processing feature in the information-based model.
D) the ability for the visitor to post comments on the content-based model.