One Reason Particular Odours, Such as the Smell of Gardenias

One reason particular odours, such as the smell of gardenias, often rekindle memories of important personal experiences is that:

A) the olfactory bulb lies near areas involved in emotion.
B) the amygdala is involved in processing olfactory information and emotion.
C) odours are processed in the frontal lobes.
D) the thalamus gives priority processing to the sense of smell.