Finding the Neural Code for Odor Molecules

Finding the neural code for odor molecules

A) is relatively straightforward, since molecules that are similar result in similar smells.
B) is relatively straightforward, since there is a simple relationship between the chemical properties of the odor and the perceived odor.
C) has focused on what smells cause olfactory neurons to fire.
D) has focused on which chemical odorants cause the olfactory neurons to fire.