Problem: Finland has one of the lowest economic inequality in the world. Finland's neighbor Russia has a different story. After the collapse of Soviet Union, Russia's economic inequality soared to the point that it has now one of the highest economic inequality in the world. John and Keith are residents of Finland. While John is rich, Keith is not so fortunate - he is poor. Similarly, David and Greg are residents of Russia. While David is rich, Greg is in poverty. Would John most likely use an extra dollar for luxury items or basic necessities?

A: luxury items

Problem: Two countries used different fuels as power sources for their activities. Alsacia used fossil fuels, while Lorena devised more advanced energy storage devices, therefore relying on electricity. Which country used more alternative energy sources?

A: Lorena

Problem: Rob likes to visit high mountainous locations. Last year he visited the the Alps mountains in Austria. There he saw an unique type of glacier called valley glacier. This year he went further east to visit the Ural mountains in Russia. There he didn't see any valley glacier. Which mountain would not see erosion of bedrocks?

A: Ural

Problem: Two identical twin brothers go to the doctor to get blood work done and also checked for STDs as part of their routine medical checkups. Neither man thinks they have caught anything, but both are sexually active so they want to get checked out. After getting the test results, the doctor tells Hank that he has strep throat, but no STDs. Jacob is told that he has hepatitis B. The doctor gives both men information about what medication to take and what they need to do to manage their diseases. Which person is more likely to get liver cancer?

A:
Jacob