Devon Is Having a Conversation with Carol

Multiple Choice

Devon is having a conversation with Carol. As Devon speaks to Carol, she crosses her arms and looks perturbed. Devon notices that Carol looks unhappy and begins to talk about something else. When Devon changes topics, Carol wonders why the conversation shifted and looks confused. From what is described here, what best characterizes the interaction?

A) Devon is the sender encoding messages to Carol. Carol is the receiver who then decodes the message.
B) Devon is the sender and Carol is the receiver. Her facial expressions are encoded messages.
C) Devon and Carol are the senders and receivers simultaneously. This is apparent because Carol's facial expressions sent a message to Devon while he spoke.
D) Neither Devon nor Carol is a sender or receiver because they are oblivious to each other's messages.