Suppose rice in the United States and in Germany is of simil
Solution
As per Purchaing Power Parity,
Price of Rice in Germany * Exch Rate = Price of Rice in US
 Euro 3 * $1.167/Euro = Price of Rice should be in US
 $ 3.501 = Price of Rice should be in US
But Actual Price = $ 1.6 ( which is actually Cheaper)
So Arbitrage Solution is Buy Rice in US & Sold in Germany
So Gain on per pound of Rice = 3.501 - 1.6
 So Gain on per pound of Rice = $1.901
 So Gain on 10000 pound of Rice = $19010
Equivalent in Euro = 19010/1.167 = Euro 16,289
So Benefit is either $ 19010 or Euro 16,289
 None of the given option is correct
PS:
 It Seems the Question drafter had made a mistake while solving, by considering exchange Rate as Euro 1.167 per$ instead of given $ 1.167 per Euro
As in this case
Price of Rice in Germany / Exch Rate = Price of Rice in US
Euro 3 / $1.167/Euro = Price of Rice should be in US
 $ 2.5707 = Price of Rice should be in US
But Actual Price = $ 1.6 ( which is actually Cheaper)
So Arbitrage Solution is Buy Rice in US & Sold in Germany
So Gain on per pound of Rice = 2.5707 - 1.6
 So Gain on per pound of Rice = $0.9707
 So Gain on 10000 pound of Rice = $9707
which will give option as - 9707 Dollars

