To be useful, a segmentation scheme must produce segments that meet four basic criteria. The criteria are:
a. segmentability, targetability, reliability and validity, and homogeneity
b. tangibility, inseparability, nonperishability, and uniqueness
c. substantiality, identifiability and measurability, accessibility, and responsiveness
d. reliability, flexibility, tangibility, and unbiased
e. complexity, compatability, relative advantage, trialability, and observability
ANSWER: c