2018
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 Question 
 [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
 
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 The result of the 4th round of trade negotiations of APTA on tariff concession came into effect on 
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  1st March 2018 
 
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  1st June 2018 
 
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  1st July 2018 
 
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  1st May 2018 
 
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 Explanation: 
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