Which of the Following Has Research Found About the Differences

Which of the following has research found about the differences between gay men and lesbians?

A) Men are more likely to be bisexual than women are.
B) Women are more likely to be exclusively homosexual than men are.
C) Women, whether lesbians or not, show arousal to both male and female stimuli.
D) Men tend to be more sexually fluid than women over the years.