Research Using Salivary Assays from Couples Over Many Days Revealed

Research using salivary assays from couples over many days revealed that the couples are most likely to show elevated levels of testosterone

A) in the evening, prior to sex occurring.
B) in the evening, after sex has occurred.
C) on evenings when there is no sex.
D) in the morning after sex had occurred the night before.
E) None of the above