In the past, traditional, 2-D films made by Hollywood studios have been considered more lucrative than 3-D films. Nevertheless, a recent study has found that the most popular films from the past year used 3-D techniques significantly more than less popular films did. This confirms the view that 3-D films have become more lucrative than traditional, 2-D films.

The conclusion above is based on which of the following assumptions?

A:2-D films are not artistically appropriate for the narratives many directors wish to depict.

B:Hollywood studios have the technical capabilities to produce either 2-D or 3-D films.

C:Films shot in 2-D could be made as easily by using 3-D technologies.

D:The majority of films made in the past year were filmed exclusively in 3-D.

E:The most popular films earn more money than less popular films.