* Many-to-Many Relationship: * To track which companies (Accounts) report which bugs and allow multiple associations for both, ajunction objectis needed. * This junction object will have two master-detail relationships: one toBug__cand one toAccount. * Why Not Other Options? * A. Roll-up summary field: Not suitable for many-to-many relationships. * B. Master-detail field on Bug__c to Account: Creates a one-to-many relationship, not many-to- many. * C. Lookup field on Bug__c to Account: Still creates a one-to-many relationship, not many-to- many. References:Many-to-Many Relationships:https://developer.salesforce.com/docs/atlas.en-us.object_reference.meta/object_reference/relationships_manytomany.htm