In order to assist the managers, you are compiling a resource which will define the various terms used in the process of strategic analysis. Provide an explanation of the following terms, with examples, to include in the resource tool which incorporates a reason why each is relevant or not relevant to the decisions.

Sunk cost,

Incremental cost,

Opportunity cost

and Historic cost.

(each term should include definition, reference source of the definition , example and explanation of relevance )