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:
Intelligence
The capacity for learning, understanding, and applying knowledge, as well as the ability to adapt to new situations and solve problems.
Longitudinal Design
A research strategy that involves repeated observations of the same variables over short or long periods of time.
Cross-sectional Design
is a research methodology that examines data from a population, or a representative subset, at a specific point in time, often used to identify patterns or relationships.
Special Education
Tailored educational services designed to meet the unique needs of students with disabilities, ensuring they receive appropriate support to achieve educational success.
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