The Facial Action Coding System Assigns a Number To

The Facial Action Coding System assigns a number to:

A) each emotion that is expressed through patterns of facial muscle contraction.
B) every combination of facial muscle contractions that had previously been linked to a specific emotion.
C) each dimension of appraisal that leads to a change in facial muscle contraction.
D) the set of effects produced by contracting each facial muscle (or section of a muscle) on the appearance of the face.