Which of the Following Describes the Research on Women's Orgasms

Which of the following describes the research on women's orgasms conducted by Masters and Johnson?

A) They found that women's orgasms were always caused by vaginal penetration by either a penis,finger,tongue,or other object.
B) They found significant physiological differences in vaginal compared to clitoral orgasms.
C) They found that female orgasms almost always involve clitoral stimulation.
D) They were able to show that females are not actually capable of multiple separate orgasms,rather this is an illusion due to changes in arousal.