Which of the Following Is NOT a Conclusion from Research

Which of the following is NOT a conclusion from research about gender differences in nonverbal behaviour?

A) Females are more likely than males to mimic other people's smiles.
B) It is easier to detect angry expressions on male faces than on female faces.
C) Subjects were more accurate in detecting happy expressions on female faces than on male faces.
D) A smile is often decoded as pride, especially on a male face.
E) The costs of decoding facial expressions inaccurately will depend on the gender of encoder and decoder.