A ten-year comparison between the countries of Arudia and Cazonia in

OFFICIAL EXPLANATION

If crop yield per planted acre was less in Cazonia than it was in Arudia, yet crop yield per total (planted plus fallow) agricultural acreage was greater in Cazonia than it was in Arudia, there must have been a lower percentage of the total acreage that was left fallow in Cazonia than there was in Arudia. Therefore, the correct answer is A.

B is incorrect. From the information in the passage, it is impossible to tell whether Arudia had more or less fallow acreage than planted acreage. C is not correct. Since the comparisons made in the passage are based on crop yields per acre, it is impossible to tell whether there was more or less fallow acreage in Cazonia than in Arudia. D is also incorrect. From the information in the passage, it is impossible to tell whether Cazonia had more or less planted acreage than fallow acreage. The last answer choice is incorrect. Since the comparisons made in the passage are based on crop yields per acre, it is impossible to tell whether Cazonia produced a greater volume of crops than Arudia produced.