This is an inference question so the first things needs to be done is "stop assuming" (atleast tats what i generally do):)
P1:To protect some fledgling industries,country Z stopped some imports.
p2:As a result , prices of those products went up and the buyers
(exporters) lost their ability to compete in export market.
here , as general tendency,we start assuming what all can be the causes of the increase in prices of those products.We dont need to!!!
So ,if the imports were stopped and prices went up...
means that..
1) only the products that were made in country Z itself are available in the market.
2)if the prices are up, that means,the cost of the same products were already higher than the those which were imported and as no option was left, exporters were forced to buy them at high prices..
A says exactly this..
thanks..
i hope this helps..