Below is an entity-relationship diagram for a relational database:

Which best describes the relationship between customers and sales?

Question

Below is an entity-relationship diagram for a relational database: 
  
   
 Which best describes the relationship between customers and sales?

Answer

A customer can make many sales.

Answer

A customer can buy other customers.

Answer

A customer can only make one sale.

Answer

One sale can belong to many customers.

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