Sato and Goshima (2007) Studied Mate Preferences of Female Stone

Sato and Goshima (2007) studied mate preferences of female stone crabs (Hapalogaster dentata) in aquaria and found that the females use chemical cues rather than visual cues to make their choice between two males. The results indicated that females

A) preferred males that were somewhat sperm-depleted because they had already been found to be attractive to other females.
B) spent more time near unmated males than sperm-depleted males.
C) were unable to detect the difference between an unmated male and a sperm-depleted male by chemical means alone when both males were small.
D) all of the above.