Firms A,B,and C operate in the market for computers.Each firm's product is popular in the market and is distinct from what the other firms offer.The following table shows the prices of laptops from 2005 through 2007. 
Which of the following is the unweighted price index for the total price of three types of laptops in 2006,using 2005 as the base year?
Definitions:
Dishwashers
Machines for cleaning dishes and utensils automatically.
Consumed
The act of using up a resource or goods, rendering them unable to be used again or necessitating their replacement.
International Trade
The exchange of goods and services between countries.
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