Which of the Following Statements Is Correct

Which of the following statements is correct?

A) Since the turn of the 20th century the number of victims per case killed by female serial offenders has fluctuated.
B) Most female offenders were employed outside the home during the course of their killings.
C) Unlike their male counterparts, about one third of female offenders were black.
D) Females tend to kill more for revenge than any other motive.