The General Conclusion of Researchers Studying Male and Female Responses

The general conclusion of researchers studying male and female responses to sexually oriented material (e.g. photographs or literature) is that

A) controlled processes are weaker than automatic processes among females.
B) females have been socialized not to respond positively to such materials.
C) males have learned not to respond to pornographic images.
D) the central arousal system of females is simply less responsive to visual imagery.