Which of the Following Is an Example of Rape by Fraud

Which of the following is an example of rape by fraud?

A) A 20-year-old male having sexual relations with a 13-year-old female
B) A male slipping a date-rape drug into the drink of a female, then having sexual relations with her
C) A male having sexual relations with a consenting female under an assumed name
D) A therapist having sexual relations with a consenting patient under the guise of effective treatment
E) A 14-year-old who pretends to be 19 in order to have sex with a 20 year old.