A Purchasing Info Record (PIR) is a master data object in SAP S/4HANA that stores procurement-related information for a specific material and supplier combination. Below is an explanation of the correct answer:

A master data record that contains information specific to a material and the supplier (B):The PIR includes details such as pricing conditions, order quantities, and delivery schedules for a specific material supplied by a specific vendor. It serves as a reference point for procurement transactions like purchase orders.

A master data record that contains information specific to a material and the purchase order (A):Purchase orders are transactional documents, not master data. The PIR provides the basis for creating purchase orders but is not tied to individual orders.

A master data record that contains information specific to a material and the customer (C):Customer-related information is managed in sales and distribution processes, not in purchasing info records.

A master data record that contains information specific to a material and the contract (D):Contracts are separate procurement documents, and while they may reference PIRs, the PIR itself is not tied to a specific contract.