Ricardo Is an Accountant and His Girlfriend April Is a Statistician

Ricardo is an accountant and his girlfriend April is a statistician. Suppose that April has had a number of sexual affairs during the course of their relationship, with women as well as men. Given the research on sexual jealousy, which of the following affairs-if he found out about it-would Ricardo be most upset about?

A) her affair with John, a successful male accountant
B) her affair with Ned, a male college student studying accounting
C) her affair with Sarah, a successful female accountant
D) her affair with Gina, a female college student studying accounting