Question:Which of the following facts about Alexa are correct? 

A Alexa provides free data on relative website visitor traffic 
B Alexa and Quantcast provide information on visitor household incomes 
C Alexa is biased towards US based traffic 
D Quantcast only tracks people who have installed the Quantcast toolbar
This is the last question of your test. 

+ Answer
A 

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Suman Chowdhury

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