Compared to Other Studies,how Do Trends in Child and Adolescent

Multiple Choice

Compared to other studies,how do trends in child and adolescent masterbation activity compare to what Kinsey found with his research in the "50s and "60's?

A) Trends are exactly the same.
B) The general shape of the trend is the same but masturbation starts a year earlier.
C) The general shape of the trend is the same but males start masturbating about 5 years earlier.
D) The trend is the same for males,but the female trend now looks more like the male trenD.