Mary and Todd Are Discussing Where They Want to Take

Mary and Todd are discussing where they want to take a vacation. Before one finishes his/her sentence, the other one is interjecting a thought about a different place or elaborating on what the other one just said. In addition, their facial expressions convey how each feels about the other one's suggestions; and this propels another suggestion. This exchange between this couple illustrates that communication:

A) can occur almost simultaneously.
B) occurs sequentially in a step-by-step fashion.
C) is more nonverbal than verbal.
D) is more verbal than nonverbal.