In plain English what does B2 and gtC10 mean?

B2 refers to a specific product or service tier, often used in business contexts to indicate a "business-to-business" model. It typically involves transactions between companies rather than between a company and consumers. "gtC10" could refer to a specific coding or classification system, but without additional context, it's unclear what it directly signifies. It might denote a threshold or category related to a specific field or industry.