Henning's Smell Prism for Categorizing Odors

Multiple Choice

Henning's smell prism for categorizing odors

A) is based on categorizing odors into six types.
B) holds that all odors can be described as a combination of basic or principal odors.
C) both is based on categorizing odors into six types and holds that all odors can be described as a combination of basic or principal odors.
D) neither is based on categorizing odors into six types nor holds that all odors can be described as a combination of basic or principal odors.