a- Long-term economic profit are possible in the Monopoly and Oligopoly market structures due to barriers of entry. List two examples of different…

a- Long-term economic profit are possible in the Monopoly and Oligopoly market structures due to barriers of entry. List two examples of different types of barriers: 

b- Monopolies are economically inefficient. List the consequences of this inefficiency as far as market price and quantity are concern:                                                                                                                     

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