Use the Following Scenario to Answer the Following Questions

Multiple Choice

Use the following scenario to answer the following questions:
In 2011,three firms were selling cellular phone service for a price of $40 per month in Pittsburgh,Pennsylvania.Each firm serviced 100 cell phone customers; thus,all firms together serviced a total of 300 customers.In 2012,five firms were selling cellular phone service for a price of $30 per month.Each firm serviced 70 cell phone customers; thus,all firms together serviced a total of 350 customers.Assume marginal cost is $0 (zero) for all firms and thus total revenue is equal to total profit.
-Due to the entrance of two firms in 2012,total monthly profits for all firms in the market decreased by $3,000 due to the ________ effect and increased by $1,500 due to the ________ effect.

A)
Price; output
B) output; price
C) price; price
D) output; output
E) competitive; noncompetitive