The functional perspective of customer value refers to how a product or service meets customer needs and expectations in terms of its functionality and features. Customization of value-added services falls under this category because it relates directly to how a product or service can be tailored to best meet a customer's specific needs.

D: "Relevancy" in the context of customer perspective of value typically refers to the idea of providing products or services that are tailored or relevant to the specific needs, preferences, or characteristics of different customer segments. This can indeed involve making offerings suitable and meaningful to each segment of customers, which often includes customization or personalization to enhance the perceived value. D is the right answer

Relevancy in the context of customer value refers to how well a product or service meets the specific needs and preferences of a customer, which often includes customization and tailored value-added services.