A) Masturbation is something men have to do, but women don't "need" to.
While most statistics show that men do masturbate more than women, there is no evidence to suggest this is due to some biological "need" on the part of men to masturbate. What is true is that social attitudes toward female masturbation are much more negative, and this likely impacts both women's early masturbation and their willingness to report masturbating in a survey. There is no research to suggest that the desire to masturbate is tied to biological sex or even gender.