What Was the Conclusion of a Study in Which Women

What was the conclusion of a study in which women were asked to rate the level of attractiveness of men's voices?

A) Women found deep voices too depressing.
B) Women felt that deep voices made them feel intimidated.
C) Women had no preferences among the different pitches of voices.
D) Women who were in their fertile periods found deeper voices more attractive than at other times of their cycles.