The seller considers hiring another previous customer, Jaimie, to rate the product online. Jaimie can choose a rating from zero to five stars. If v=0, Jaimie charges the seller $20 for each star she gives (e.g., she charges $40 to give two stars). If v=100, she charges $15 for each star she gives.

Let s0be the number of stars Jaimie gives in her rating if v=0; let s100be the number of stars Jaimie gives in her rating if v=100.

Is there a perfect Bayesian equilibrium in which s0=s100with probability 1?

A. Yes, and there are multiple perfect Bayesian equilibria of this type with different star ratings.

B. No.

C. Yes, and the star rating (s_0, s_100) is unique in this type of perfect Bayesian equilibrium.