Studying the Sexual Behavior of White Americans in the 1940s

Studying the sexual behavior of white Americans in the 1940s and 1950s,Alfred Kinsey found that:

A) most men and women were virgins prior to marriage
B) attitudes toward male and female sexuality were similar
C) few men and women had engaged in masturbation and oral sex
D) significant differences between public standards and private practices existed
E) few differences between public standards and private practices existed