Researchers Produce the Efficient Quantity of Research and Development If

question 57

Multiple Choice

Researchers produce the efficient quantity of research and development if they receive a voucher equal to the marginal ________ benefit,or a subsidy equal to the marginal ________ benefit. Patents and copyrights ________ result in an efficient amount of research and development.

• A)social;social;cannot
• B)social;social;can
• C)external;external;cannot
• D)external;external;can
• E)external;social;can

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