While Masturbation Is Common for Both Men and Women,what Is

Multiple Choice

While masturbation is common for both men and women,what is one of the most common differences related to gender and masturbation? 

A)  the age at which it typically stops 
B)  the frequency 
C)  decreases among women as they age, but not for men 
D)  increases among women as they age, but decreases for men