What is the recommended solution to ensure long-term performance, bearing in mind the above requirements?

Universal Containers (UC) is implementing a new customer categorization process where customers should be assigned to a Gold, Silver, or Bronze category if they’ve purchased UC’s new support service. Customers are expected to be evenly distributed across all three categories. Currently, UC has around 500,000 customers, and is expecting 1% of existing non-categorized customers to purchase UC’s new support service every month over the next five years.

What is the recommended solution to ensure long-term performance, bearing in mind the above requirements?
A . Implement a new global picklist custom field with Gold, Silver, and Bronze values and enable it in Account.
B. Implement a new picklist custom fieldin the Account object with Gold, Silver, and Bronze values.
C. Implement a new Categories custom object and a master-detail relationship from Account to Category.
D. Implement a new Categories custom object and create a lookup field from Account to Category.

Answer: B