28. Which of these is not a social function of tears mentioned in the article?(A)Tears have a predetermined value, often seen as self-centered and sometimes as opportunistic.(B)A psychiatrist may use tears to diagnose depression by asking a patient to describe his or her crying.(C)A solitary crier will wrap their arms around themselves, creating their own soothing embrace.(D)Tears are said to have a soul-cleansing effects and are necessary for some people.