What Is a Major Different Between Olfactory and Visual or Somatosensory

Multiple Choice

What is a major different between olfactory and visual or somatosensory projections?

A) the area of the cortex dedicated to olfaction is much larger than visual or somatosensory inputs
B) they are very specifically mapped from the olfactory bulb to the olfactory cortex
C) they are non-topographic and highly divergent
D) pyramidal neurons of the olfactory cortex are more sensitive than that of the visual or somatosensory cortex