While talking to Mr$.$ and Mrs$.$ Knighton, the appliance salesperson described one of the refrigerators as "a real money saver" and "a true bargain," but he also kept looking down at his feet and shuffling around. His nonverbal cues:

Select one:

a$.$ create subservient selling.

b$.$ create differential disadvantages.

c$.$ are part of how he communicated to the Knightons.

d$.$ are a type of marketing mix fesidback.

e$.$ will not affect interpersonal communications.