Our restaurant had a classification of "B."

A. Excellent Sanitation
B. Good Sanitation
C. Qualified Sanitation
D. Disqualified Sanitation

Below you see this admonition:

Customers are advised to dine in restaurants of higher sanitation ratings.

We are not sure of the exact meaning of "Qualified Sanitation." We are sure of "Disqualified Santation." You can call the "Complaints Hotline" at phone number 12320.