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

Note: Please type "single sourcing", "dual sourcing", "parallel sourcing" or "multiple sourcing" in the box. Only one of the sourcing structures applies to each statement.

• It can generate risks of lateral monopoly for the buying company:___________
• It is an effective strategy for supply risk management, although not the most efficient: __________
• It is used when the objective is to establish short-term, competitive relationships with suppliers:_________
• it can lead to a price advantage for the buying company in the short term: _______________
• It is an effective but also efficient strategy for supply risk management:_____________
• It means that the company has one, or more, backup suppliers: _____________

Explain your answer