A: not D Develop optimal functional design for the end user. This option describes the purpose of user experience (UX) design or product design, which aims to create intuitive and efficient interfaces for users. While CRM systems may incorporate elements of user-centered design, their primary purpose is not to develop functional designs for end users.

A: not C While CRM systems and ERP systems serve different purposes within an organization, they often complement each other. CRM systems primarily focus on managing customer relationships and interactions, while ERP systems focus on managing various business processes, including finance, manufacturing, and supply chain management. CRM technology does not typically extend the functionality of ERP software. However, CRM and ERP systems may integrate with each other to share data and provide a more comprehensive view of the business. This integration allows for a seamless flow of information between customer-facing activities managed by CRM systems and internal business processes managed by ERP systems.

CRM systems are typically used to manage a company's interactions with current and potential customers. They help businesses improve customer relationships, assisting in customer retention and driving sales growth