Final answer:
Without additional context about the specific nickel mug promotion, it is not possible to determine whether it lasted for 3, 5, 7, or 10 years. More information is needed regarding the promoter details to provide an accurate answer.
Step-by-step explanation:
To answer the question about the duration of the nickel mug promotion, it would be necessary to have more context or specifics about which nickel mug promotion is being referred to. Such promotions are usually marketing campaigns by a company, organization or possibly within a specific locality or region, and details can vary widely.
If this refers to a historical promotion related to a chain of restaurants, a certain beverage company, or a localized event, the duration could be as stated in the options provided, but without clarification or additional historical data about the specific promotion in question, it is not possible to definitively select option A), B), C), or D).
For a detailed and accurate response, more information is needed regarding the time period, company, or any other relevant details that could lead to a conclusive answer.