It is a unit.
Question : The concept of marginal social cost refers to:
Option 1: The cost incurred by an individual or firm in producing an additional unit of a good or service
Option 2: The cost incurred by society as a whole in producing an additional unit of a good or service
Option 3: The cost incurred by the government in producing an additional unit of a good or service
Option 4: The cost incurred by consumers in producing an additional unit of a good or service
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