A few months after the grand opening of the Naperville store, Caffè Gustoso's owners want to determine whether the fish tanks were a good investment. In the final stage of the business buyer decision process, the owners review the supplier's performance, which includes the installation, maintenance, and warranty response of the fish tank vendor. Additionally, the owners want to determine the ROI for the fish tanks. What data do you recommend the owners collect for this analysis?

A. The owners should determine the amount of time customers spend in the Naperville location as compared to the average time spent in a coffee shop.
B. The owners should evaluate the performance of their wait staff.
C. The owners should determine the average transaction per customer in the Naperville location as compared to average coffee shop transactions.

Customer spending data is crucial for determining the ROI of the fish tanks at Caffè Gustoso. By comparing the average transaction per customer at the Naperville location to industry standards, the owners can assess the financial impact of the fish tanks. Additionally, analyzing the supplier's performance metrics such as installation, maintenance, and warranty response will provide insights into the overall investment.

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