Padma, an Avid Home Cook, Has No Culinary Training or Experience

Padma, an avid home cook, has no culinary training or experience in professional kitchens. After dining at her house one evening, her friend Tom is so impressed by her cooking that he gives Padma the opportunity to work in the restaurant he manages.
-Padma is asked if she knows how to make a red wine reduction. Padma looks down at her feet, quietly mumbles "sure," and starts wringing her hands. When the job of making the red wine reduction is assigned to someone else Padma is confused, as she had answered affirmatively that she knew how to do it. Which of the following is the best explanation of what happened here?

A) A psychological barrier has obstructed communication; by mumbling her reply Padma is signaling that she is offended by the request.
B) A semantic barrier has occurred; since Padma answered "sure" instead of "yes" her answer was confusing.
C) A language barrier has obstructed communication; Padma should have said "yes" in several different languages to ensure that she was understood.
D) A physiological barrier has obstructed communication; by wringing her hands Padma has given the impression that they hurt and that she cannot perform the task.
E) A mixed message has obstructed communication; Padma's verbal and nonverbal responses communicate different things.