Which Is True of Rape Shield Laws

Which is true of rape shield laws?

A) Have been on the books for 200 years
B) Provide that the defense can inquire into recent sexual history to explain the presence of physical evidence such as semen
C) Provide that the defense cannot inquire about the victim's prior sexual contact with the defendant
D) Provide that at no time can the defense bring up the victim's past sexual conduct
E) all of the above