Which statement about different methods of birth control is false?

A- Hormonal methods, such as the pill, change a woman's hormone levels to prevent pregnancy, and in general are highly effective.

B- Male and female condoms offer protection against STDs because they limit both the transmission of body fluids and direct genital skin-to-skin contact.

C- Surgical sterilization procedures, including a vasectomy for men and tubal ligation for women, must be given careful advance thought because they are meant to be permanent.

D- Spermicides, used on their own without a barrier method such as a diaphragm, effectively prevent pregnancy because the chemicals kill all the millions of sperm released in the male’s ejaculation.