What does threshold describe in relation to retail demand?

A$)$ The maximum distance the average consumer will travel to acquire a product or service

B$)$ The strategic grouping of tenants to appeal to a variety of needs and draw in as many consumers as possible

C$)$ The use of demographic and economic datia to ensure the trading area population aligns with the target audience

D$)$ The role convenience plays for consumers when determining where to acquire a product or service