Franco Is Enjoying a Fine Lunch in His High Chair

Franco is enjoying a fine lunch in his high chair. He picks up a handful of spaghetti and stuffs it in his mouth. Next, he picks up two handfuls and shoves them in his ears. The next handful goes in his hair, and the one after that is casually thrown on the floor. As his motivation appears to be simply the novelty of each of these acts, Franco's behavior would best be categorized as a

A) secondary circular reaction.
B) primary circular reaction.
C) tertiary circular reaction.
D) beginning of thought.