Although Certain Facial Expressions Are Easily Encoded and Decoded Across

Although certain facial expressions are easily encoded and decoded across the human species,display rules

A) dictate whether to encode or decode a given expression.
B) signal whether we should be able to determine if someone is being truthful.
C) signal whether we should pay attention to verbal or nonverbal behaviours.
D) suggest that culture is also important.
E) dictate that we should hide our embarrassment.