Please type to what general purchasing strategy the following statements most likely refer.

Note: Please type "PR" for Purchasing rationalization, "SBO" for Supply Base Optimization, "PaaS" for Purchasing as a Service, or "WSBM" for World Class Supply Base Management in the box. Only one of the purchasing strategies applies to each statement.

• It is the most basic purchasing strategy: ___________
• It emphasizes the strategic need for purchasing to align with internal customers:___________
• It emphasizes the strategic need for purchasing to manage supplier relationships efficiently:______________
• It fully recognizes suppliers' importance for value creation in final products/services: _______________
• It is focused on internal efficiency: _______________
• It requires global supply market knowledge to be implemented: _____________

Explain your answers