Mark Is in a Long-Term, Monogamous Relationship; Karl Is Single

Multiple Choice

 Mark is in a long-term, monogamous relationship; Karl is single and dates women occasionally; and Stephen has three girlfriends who all believe that he is monogamous. It is most likely that

A) all three men have similar testosterone levels.
B) Karl has the highest testosterone levels, followed by Stephen, and then Mark.
C) Stephen has the highest testosterone levels, followed by Karl, and then Mark.
D) Mark has the highest testosterone levels, followed by Stephen, and then Karl.