Which of the Following Is a Documented Asymmetry in the Olfactory

Which of the following is a documented asymmetry in the olfactory system?

A) The number of receptor types in the left olfactory epithelium is 10 times greater than in the right olfactory epithelium.
B) The cortical volume of the primary olfactory cortex is larger on the right side than on the left in right-handed people.
C) The nasal passage in one nostril is larger than the other nostril, and this switches back and forth every few hours.
D) Although the left nostril projects to both the left and right cerebral hemispheres, the right nostril projects only to the right hemisphere.