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Planned economies had a history of failing to produce enough consumer goods. 
Which method of allocating these goods in short supply involved a market system approach?

1 ) 

equal rationing to people according to their family size 

2 ) 

official sale to people according to their ability to queue  

3 ) 

selective distribution to people according to their occupation

4 ) 

unofficial sale to people according to their willingness to pay

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