While Walking Past the School Cafeteria,you Pick Up on the Scent

While walking past the school cafeteria,you pick up on the scent of apples baking,and you suddenly feel happy.Later you remember that your grandmother used to always bake apple pie on holidays.What explanation would a neuropsychologist give for the emotional response you experienced?

A) The olfactory fibers are myelinated,so the sensory input is processed immediately and associated memories are activated.
B) The smell of food (a basic need) always provokes a positive emotional response.
C) Olfactory input projects first to the limbic system and the hippocampus.
D) Baked apples are an example of "umami," which triggers the release of pleasure - inducing substances in the brain.