That makes it a difficult question to answer, as a board foot is a unit of volume, and a ton is a unit of weight. The conversion would depend on the density of the specific species of wood.
Edit: a board foot of Yellow Pine weighs between 2-3 lbs. Assuming a 2 lbs sample, a ton of wood would equal about 1000 board feet, so "C" would be the appropriate response to the test question.
Oak weighs 3.75 lbs per board foot, so in that case option "B" would be correct. (2000/3.75=533)
Well as an inexperienced oak wood chucked I would say that I every day would prefer Pine to chuck. As an experienced pine wood chuck chucker I chucked non American tons of wood.
Time spent chucking oak outcome vs pine would be a whole lot of wood!