In What Way Are the Senses of Taste and Smell

In what way are the senses of taste and smell different?

A) Taste buds are modified neurons and olfactory cells contain a pore with supporting cells and elongated cells.
B) Taste buds contain cilia while olfactory cells contain microvilli.
C) Taste depends on a "weighted average" of all the taste messages while smell depends on the signature of olfactory cells stimulated.
D) There are 100s of different tastes while only 5 different smell families.
E) The sensation of taste occurs in the spinal cord while the sensation of smell occurs in the cerebral cortex.