Which of the following is NOT one of the four customer tiers discussed by Zeithaml, Rust, and Lemon?

Which of the following is NOT one of the four customer tiers discussed by Zeithaml, Rust, and Lemon?

Which of the following is NOT one of the four customer tiers discussed by Zeithaml, Rust, and Lemon?











a. Platinum
b. Gold
c. Bronze
d. Iron
e. Lead













Answer: C