According to Research Discussed in the Text,if You Try to Fake

According to research discussed in the text,if you try to fake a smile,the recipient might perceive it as fake because

A) people tend to show their teeth too much in a false smile.
B) people have a difficult time controlling the muscles that normally crinkle their eyes in a true smile.
C) people who are faking smiles tend to move their muscles in a highly symmetrical manner.
D) people who are faking smiles often fail to make eye contact.