Which of the Following Generalizations About Smiling and Nodding Is

Which of the following generalizations about smiling and nodding is inaccurate?

A) Smiling and/or nodding tends to be more effective when it involves persons of unequal status.
B) Smiling and/or nodding by food servers tends to increase tips.
C) Smiling and/or nodding tends to make therapists seem more warm and friendly.
D) Smiling and/or nodding by teachers tends to increase students' attention.

Correct Answer:

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