Which Is True, in Terms of Likelihood of Sexual Assault

Which is true, in terms of likelihood of sexual assault?

A) A woman is more likely to be raped by a stranger than by a casual date.
B) A woman is more likely to be raped by a family member than by a casual date.
C) A woman is more likely to be raped by an acquaintance than by a stranger.
D) A woman is more likely to be raped by a stranger than by a steady boyfriend.